Question

Please help for one easy geometry question. PLEASE

Answer 1

40pi

Explanation:

Area of a circle:
`A = \pi r^2`

Shaded area: 2*72° = 144°, which is 0,4 of the total area. (144°/360° = 0,4)

r = 10, according to your picture

->
`A = \pi \cdot 10^2 \cdot 0,4 = 40 \pi`