Question

Find the area of a circle with a radius of 2.

Either enter an exact answer in terms of a or use 3.14 for
pi and enter your answer as a decimal.

Answer 1

A≈12.57

Explanation:

A=πr2=π·22≈12.56637

Answer 2

a=12.56

Explanation:

The area of a circle is:

a=
`\pi \\`r^2

Substitute 2 in for r

a=
`\pi \\`2^2

a=
`\pi \\`4

Substitute 3.14 in for pi

a=4*3.14

a=12.56

Hope this helps!