Question

if the perimeter of a sem-circular Park is 72 m find its area of the radius.​

Answer 1

Step-by-step explanation:

Answer:area=72^2,Perimeter=36m

Answer 2

Answer:

$perimeter \: of \: semicircle = r(\pi + 2) \\ 72 = r( \frac{22}{7} + 2) \\ 72 = r( \frac{22 + 14}{7} ) \\ 72 = r( \frac{36}{7} ) \\ 72 \times \frac{7}{36} = r \\ 14 = r$

$area \: of \: semicircle = \frac{\pi {r}^{2} }{2 } \\ = \frac{22}{7} \times \frac{14 \times 14}{2} \\ = 308$

So the area is 308m²