Find the perimeter of a sector with central angle 180 and radius 7cm

Challenger App

★

1M+ Downloads

A28cm

B44cm

C36cm

D35cm

Answer:

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

$=2\pi\times7\times180/360+2\times7$

$=2\times22/7\times7\times1/2+14$

$=22+14$

$=36$

Related Questions:

Find the perimeter of the circle with radius 28 cm

In the figure, O and P are the centres of two circles. The measure of <ACM is:

The circumference of a circle is 11 cm and the angle of a sector of the circle is 60°. The area of the sector is $(use \pi=\frac{22}{7})$