If the perimeter of a semi circle is 72m find its area and radius brainly
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Answered by
0
Answer:
r=14cm,area=616 cm^2
Step-by-step explanation:
perimeter of semicircle=72cm
r (22/7+2)=72
r (22+14/7)=72
r (36/7) =72
r=72×7/36
r=14cm
Area of circle=22/7×14×14
=22×28=616cm^2
Answered by
1
Answer:
2πr=perimeter
r=72/2×π
r=11.46
area=πr²
area=π×72/2×π×72/2
area=421.38m²
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