Question

Calcula el área de color verde

Answer 1

Respuesta:

área de la corona del color verde

$formula \\ area = ({R}^{2} - {r}^{2} )\pi \\ R:radio \: mayor \\ r: \: radio \: menor \\ \\ reemplazando \\ area = ( {12}^{2} - {4}^{2} )\pi \\ area = (144 - 16)\pi \\ area = 128\pi \\ \pi = 3.14 \\ area = 128 \times 3.14 \\ area = 402.12 {cm}^{2}$