Question

If radius of a circle is 7cm,then perimeter of its semi circle is

Answer 1

Answer:

Perimeter of Semi Circle = 36 cm

Step-by-step explanation:

$Perimeter \: \: of \: \: Semi \: \: Circle \\ = \pi r + 2r \\ = r (\pi + 2) \\ = 7 \: cm( \frac{22}{7} + 2 ) \\ = 7 (\frac{22+14}{7}) \\ = 7 \times \frac{36}{7} \\ = \: \underline{ \underline{36 \: cm}}$