Question

Determine a área do setor circular de raio 12 cm cujo ângulo central equivale a 45°. *​

Answer 1

Explicação passo-a-passo:

$\sf A=\dfrac{\pi\cdot r^2\cdot\alpha}{360^{\circ}}$

$\sf A=\dfrac{3,14\cdot12^2\cdot45}{360}$

$\sf A=\dfrac{3,14\cdot144\cdot45}{360}$

$\sf A=\dfrac{20347,2}{360}$

$\sf \red{A=56,52~cm^2}$