Question

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

Answer 1

Answer:

$a = \pi {r}^{2}$

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

$a = 3.14 \times {11.5}^{2}$

$a = 3.14 \times 132.25 \\ = 415.265$

To the nearest tenth = 415.3