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

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

A44cm

B50cm

C74cm

D28cm

Answer:

B. 50cm

Read Explanation:

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

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

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

$=22+28$

$=50$

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