Question

Find the area.
20 cm

help

Answer 1

314.1592654 cm

Explanation:

20 cm = circumference

circumference/2 = radius

radius = 10

π
`r^(2)` = area

π
`10^(2)` = 314.1592654 cm

Answer 2

314
`cm^(2)`

Explanation:

A =
`\pi`
`r^(2)`

A = 3.14
`(10)^(2)`

A = 314
`cm^(2)`