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• • ### 3 Ways to Determine Square Inches - wikiHow

Example: find the area of a circle. Task 1: Given the radius of a cricle, find its area. For example, if the radius is 5 inches, then using the first area formula calculate π x 5 2 = 3.14159 x 25 = 78.54 sq in.. Task 2: Find the area of a circle given its diameter is 12 cm. Apply the second equation to get π x (12 / 2) 2 = 3.14159 x 36 = 113.1 cm 2 (square centimeters).

• ### Excel: Find the Area of a Circle - Excel Articles

In cell D2, calculate the area of the pizza in square inches, using =PI()*C2^2. Area is pi times radius squared. In column E, enter the quantity of pizzas. Calculate the total square inches in column F by using =E2*D2. Enter the cost for the special in column G. In column H, calculate the dollars per square inch of pizza, using =G2/F2.

• ### 4 Ways to Calculate the Area of a Circle - wikiHow

Jun 18, 2021· For example, if the radius of the circle is 6 inches, first you would square 6 and get 36. Then, you would multiply 36 by π and get 113.04. Therefore, the area of the circle is 113.04 inches squared. To find the area using the diameter, or the distance from one side of the circle …

• ### Square Inches Calculator | Square Footage .org

Directions: Use the calculator above to calculate your square inches. *Square Inches is also known as (a.k.a) square inch, square in, SqIn, Sq.In., sq.in., in2 & in 2 **This Calculator also calculates square feet, total height in feet, total height in inches, total length in feet and total length in inches.

• ### Area of a 36 Inch Circle - CalculateMe.com

What is the area of a circle with a DIAMETER of 36 inches (radius of 18 inches)? How big is a 36 inch circle? Use this easy and mobile-friendly calculator to compute the area of a circle given its diameter.

• ### Circles within a Rectangle - Engineering ToolBox

The calculator can be used to calculate. Input the rectangle inside dimensions - height and width and the circles outside diameters. Default values are for 0.5 inch circles inside a 10 inch x 10 inch square. The calculator is generic and any kind of units can be used - as …

• ### Circular Inches to Square Inches | Kyle's Converter

A square inch is an area with sides measuring one inch by one inch. One square inch (in 2 ) is 6.4516 square centimeters (cm 2 ). In SI base units a square inch is 0.00064516 square meters. 1 …

• ### How to Calculate Square Inches.

To calculate area in square inches, its mandatory to have your dimensions (length, width or radius) in inches. Formula to calculate square inches. Suppose you have a rectangular room and your asked to find its floor's square inches. First you will begin by measuring the length of the floor in inches and the width in inches also. Then to find ...

• ### Area of a Circle Calculator

Example: find the area of a circle. Task 1: Given the radius of a cricle, find its area. For example, if the radius is 5 inches, then using the first area formula calculate π x 5 2 = 3.14159 x 25 = 78.54 sq in.. Task 2: Find the area of a circle given its diameter is 12 cm. Apply the second equation to get π x (12 / 2) 2 = 3.14159 x 36 = 113.1 cm 2 (square centimeters).

• ### Circle Area Calculator - CalcuNation.com

Multiply Pi (3.1416) with the square of the radius (r) 2. Area = 3.1416 x r 2. The radius can be any measurement of length. This calculates the area as square units of the length used in the radius. Example: The area of a circle with a radius(r) of 3 inches is: Circle …

• ### Circle Area to Diameter Calculator - SensorsONE

The formula used to calculate the circle diameter is: ø = 2 x √(A / π) Symbols. ø = Circle diameter; A = Circle area; π = Pi = 3.14159… Area of Circle. Enter the area contained within a circle. Diameter of Circle. This is the diameter of a circle that corresponds to the specified area.

• ### Square Footage Calculator - Calculate Your Area

Square footage for a circular area. Measure the diameter of your circle in feet. To calculate the area of a circle we use the formula: π x (diameter/2) 2. That is to say π (pi is 3.14159265) multiplied by half the diameter squared. So, we divide our diameter by 2 and then square it (multiply it …

• ### Surface Area of a Circle Calculator - EasyCalculation

The circle is the three-dimensional object with no edges. Radius is the distance from the center to the inner edges of the circle. The area of a circle can be defined by knowing the number of square units that can fit inside that circle and if each square inside has an area of 1 cm 2.The surface area of the sphere and circle, both were same, which is 4 π r 2.

• ### Circle Calculator

Circle Calculator. Please provide any value below to calculate the remaining values of a circle. While a circle, symbolically, represents many different things to many different groups of people including concepts such as eternity, timelessness, and totality, a circle by definition is a simple closed shape. It is a set of all points in a plane ...

• ### Area of circle, formula and illustrated lesson: how to ...

Formula for Area of circle. The formula to find a circle's area π ( radius) 2 usually expressed as π ⋅ r 2 where r is the radius of a circle . Diagram 1. Area of Circle Concept. The area of a circle is all the space inside a circle's circumference . In diagram 1, the area of the circle is indicated by the blue color.

• ### Area of a Circle Calculator - Square Footage Area

You can calculate the area of the circle border in square feet, in square inches, square yards, square centimetres, square millimetres and square meters. Yes, our tool is that awesome. Our calculator …

• ### Squaring the Circle - Calculator - Rechneronline

Calculator for the edge length of a square and the radius of a circle, if both have the same area. Also the perimeter will be calculated. Squaring a circle geometrically is in fact impossible, a circle can't be constructed from a square and vice versa. Also the exact calculation can't be done, because the value of π (pi) can't be given exactly.

• ### How to calculate the area of a circle using Excel - YouTube

How to use Microsoft Excel to calculate the area of a circle.The formula for the area of a circle is pi*r^2, by using different cells you can find the area o...

• ### How to Determine the Geometry of a Circle

Jul 03, 2019· A = 56.72 square centimeters You can also calculate the area if a circle if you know the radius. So, if you have a radius of 4.5 inches: A = π * 4.5^2 A = 3.14 * (4.5 * 4.5) A = 3.14 * 20.25 A = 63.585 (which rounds to 63.56) A = 63.56 square centimeters

• ### Square Footage Calculator

Calculate square footage, square meters, square yardage and acres for home or construction project. Calculate square feet, meters, yards and acres for flooring, carpet, or tiling projects. Enter measurements in US or metric units. How to calculate square footage for rectangular, round and bordered areas. Calculate project cost based on price per square foot, square yard or square meter.

• ### Volume Calculator

This free volume calculator can compute the volumes of common shapes, including that of a sphere, cone, cube, cylinder, capsule, cap, conical frustum, ellipsoid, and square pyramid. Explore many other math calculators like the area and surface area calculators, as well as hundreds of other calculators related to finance, health, fitness, and more.

• ### Radius Calculator: Compute Dimensions of a Circle – DQYDJ ...

Using the Radius Calculator. You can enter the radius and then compute diameter and circumference in mils, inches, feet, yards, miles, millimeters, centimeters, meters and kilometers.. Area has different units, but you can use: square mils, square inches, square feet, square yards, square miles, acres, hectares, square millimeters, square centimeters, square meters, and square kilometers.

• ### How Do You Convert Diameter to Square Inches?

Apr 14, 2020· How Do You Convert Diameter to Square Inches? To determine the area of a circle from its diameter, divide the diameter by two, square it and multiply by π. The formula for calculating the area of a circle is: A = πr 2, where r is the radius of the circle. Mathematician Archimedes (287-212 B.C.E) was first to calculate the area of a circle.

• ### Semicircle Area Calculator || Definition, Formula, Perimeter

Dec 02, 2020· With this semicircle area calculator, you can quickly find the area of half of a circle.What is more, the tool also doubles as a semicircle perimeter calculator, so inputting radius or diameter will help you find the basic features of the shape in the blink of an eye.In the article below, we provide the semicircle definition and explain how to find the perimeter and area of a semicircle.

• ### Circle Diameter to Area Calculator - SensorsONE

This tool will calculate the area of a circle from the diameter, and will convert different measurement units for diameter and area. Formula. The formula used to calculate circle area is: A = π x (ø/ 2) 2. Symbols. A = Circle area; π = Pi = 3.14159… ø = Circle diameter; Diameter of Circle. Enter the diameter of a circle.

• ### Area of a Circle Calculator

Oct 13, 2020· The area of a circle calculator helps you compute the surface of a circle given a diameter or radius.Our tool works both ways - no matter if you're looking for an area to radius calculator or a radius to the area one, you've found the right place . We'll give you a tour of the most essential pieces of information regarding the area of a circle, its diameter, and its radius.

• ### Diameter Calculator: Compute Dimensions of a Circle ...

Apr 04, 2020· Compute the area using these units: square mils, square inches, square feet, square yards, square miles, acres, hectares, square millimeters, square centimeters, square meters, and square kilometers. To run the calculator, hit the 'Calculate Circle Dimensions' button when you have entered the known diameter.