Question

if the perimeter of semi circle park is72m find area and radius in ratio ​

Answer 1

Answer:

Answer:The radius of the circular park is 14 and the area of circular park is 307.72 .

Answer 2

Answer:

36π : ( π + 2 )

Step-by-step explanation:

 For a semi-circle perimeter is defined by the sum of its diameter and half of the perimeter of circle. Let r be the radius.

  This means:

⇒ Perimeter of semi - circle = πr + Diameter

⇒ 72 = πr + 2r

⇒ 72 = r( π + 2 )

⇒ 72 / ( π + 2 ) = r

   Area of semi - circle = πr^2

Ratio of area to radius = πr^2 / 2r

   ⇒ πr / 2

   ⇒ π[ 72 / ( π + 2 ) ] / 2

   ⇒ 36π / ( π + 2 )