Question

Aflati aria unui sector de cerc daca a) R= 5 cm, n = 30

Answer 1

Asector cerc=$\pi$$R^{2}$xn°/360°=$\pi$25x30°/360°
A=25$\pi$/12

Answer 2

A = π·r²·n/360 = π·25·30/360 = 2,08(3)·π cm²