# Find the area and circumference of a circle

r is the radius of the circle. When we make radius the subject we get; Once you have the radius you use the formula below to find area of the circle. Example: Calculate the area of a circle whose circumference is 154 cm. Therefore, the

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## Circumference of a Circle (Perimeter of Circle)

We'll simply do some rearranging of the expression, keeping in mind that the radius ( r) is equal to half the diameter ( D )-in other words, D = 2 r. Since D = 2 r, then. Let's substitute this value for r

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## Circumference and Area of a Circle Calculator

Circumference and area of a circle The circumference is the perimeter of a circle. It is a length and so is measured in \ (mm\), \ (cm\), \ (m\) or \ (km\). An area is measured in square

## Area of a circle (video)

Find the area and circumference of a circle with diameter {eq} (d) = 48\ \rm {cm} {/eq}. Leave the answer in terms of {eq}\pi {/eq} Step 1: Read the given word problem and identify the radius

## How to Find the Circumference and Area of a Circle: 14 Steps

Calculate the Area and Circumference of a circle with variables: Step 1.Calculate the circle's radius or diameter. Some issues will offer you a variable radius or diameter, such as r = (y+ 2)

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