Find the area of a circle with a circumference of \blueD{31.4}31.4start color blueD, 31, point, 4, end color blueD units.

Question

asked Dec 2, 2020 128k views

2 Answers

Ankit Jajoo · Answer 1 · 2020-12-07T07:47:29+0000

Answer:

The area of the circle is
$78.5\ units^(2)$

Explanation:

step 1

Find the radius of the circle

we know that

The circumference of a circle is equal to

$C=2\pi r$

we have

$C=31.4\ units$

assume

$\pi=3.14$

substitute the values

31.4=2(3.14)r

$r=31.4/[2(3.14)]=5\ units$

step 2

Find the area of the circle

The area of the circle is equal to

$A=\pi r^(2)$

substitute the values

A=(3.14)(5)^(2)

$A=78.5\ units^(2)$