Question

Which is the area of a circle with a radius of 5 units? (use 3.14 for ) A. 15.7 square units B. 31.4 square units C. 78.5 square units D. 392.5 square units

Answer 1

C

Explanation:

A =
`\pi`r²

so we do

5² = 25 *
`\pi`

25 *
`\pi`

= 78.5 square units