Question

the area of sector of radius 28 cm is 308 CM square find the angle of its ok

Answer 1

$1 \div 2 \: \times {r}^{2} \alpha = area \: of \: sector$
$1 \div 2 \times {28}^{2} \alpha = 308$
784@ = 616
@ = 616 ÷ 784
= 11 ÷ 14 this is in radian