Question

Find the perimeter of semicircle having perimeter 7 cm​

Answer 1

Answer:

58 cm

Step-by-step explanation:

Formula to find the perimeter of the circle = $2\pi r$

So perimeter of the semicircle = $\frac{2\pi r}{2}$ + diameter = $\pi r$ + the diameter

Diameter of a circle/semicirle = $2r$

Perimeter of the figure is $2\pi 7$cm + (2×7)

= (2×$\frac{22}{7}$×7)cm + 14 cm

=44 cm + 14 cm

= 58 cm