Question

Please help with geometry homework. Involves circumference of a circle and area of a circle type stuff.

Answer 1

`a = \pi {r}^(2)`

The radius is half of the diameter. Therefore the radius is 23÷2 = 11.5.

`a = 3.14 * {11.5}^(2)`

`a = 3.14 * 132.25 \\ = 415.265`

To the nearest tenth = 415.3