Question

Aria unui sector circular cu raza de 6cm, corespuzător unui unghi la centru de măsură de
45 grade va avea valoarea​

Answer 1

$arie \: sector \: = \frac{45 \times \pi \times {r}^{2} }{360} = \frac{45 \times \pi \times {6}^{2} }{360} = \frac{45 \times \pi \times 36 }{360} = \frac{45 \times \pi }{10} = 4.5\pi$

Answer 2

$\it \mathcal{A}_{sector}=\dfrac{\pi R^2\cdot u}{360^o}=\dfrac{\pi\cdot36\cdot 45^o}{360^o}= 4,5\pi$