Question

Find the perimeter of the given
sector of a circle.​

Answer 1

Answer:

$perimeter \: of \: sector \\ = \frac{ \theta}{360} \times perimeter \: of \: circle \\ \frac{ \theta}{360} \times 2\pi \: r \\ where \: \\ \theta \: = 60 \\ r = 10.5 \\ \pi = \frac{22}{7} \: or \: 3.14 \\ then \\ \: perimeter \: of \: sector \\ = \frac{60}{360} \times 2 \times \frac{22}{7} \times 10.5 \\ = 11$