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# How to find area from radius?

To find area from radius, you would pretty much do like..

(A=pi R2)

Radius = 4mm

R2 = 16mm

16 x 3.14 = 50.24

A= 50.24

is that right?? like the formula?

### 4 Answers

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- 8 years ago
The area of a circle is the number of square units inside of the circle. To find the area of a circle you must find radius (the distance from the center of the circle to the exterior). The area is found by the formula: A = 3.14 x r x r

So yup your right

- ashelyLv 44 years ago
on the grounds that the two area have a ingredient of three.14 (or an approximation of "pi"), you may divide the two area by utilising this fee, and additionally you finally end up with: 256 = r² since the sq. root of 256 is sixteen, the respond is r = sixteen.

- Anonymous8 years ago
you're correct

Source(s): schoool

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