If the perimeter of a semi-circular park is 72m , find it's area and radius.
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Step-by-step explanation:
The radius of the semi circular park is 14 meter.
The area of the semi circular park is 307.72 square meter.
Step-by-step explanation:
Given : If the perimeter of semi circular park is 72 m.
To find : The area and radius of the semi circle ?
Solution :
The perimeter of the semi circular park is P=2r+\pi rP=2r+πr
We have given, P=72
P=r(2+\pi)P=r(2+π)
72=r(2+3.14)
72=r(5.14)
r=72/5.14}
r=14
The radius of the semi circular park is 14 meter.
The area of the semi circular park is A=pi r^2/2
A=3.14×14^2/2
A=3.14×196/2
A=3.14×98
A=307.72m^2
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