Question

Find the perimeter of a sector with central angle 90 and radius 14cm

• A. 44cm
• B. 50cm
• C. 74cm
• D. 28cm

Answer 1

Answer:

B. 50cm

Perimeter of a sector$= 2\pi{r}\times\theta/360+ 2r$

$=2\pi\times14\times90/360+2\times14$

$=2\times22/7\times14\times1/4+28$

$=22+28$

$=50$