Question

if the perimeter of a semi circular park is 72 m find the area and radius

Answer 1

soln:-
πr+ 2r =72 cm
r(π+2)=72
π+2=72/r
22/7+2=72/r
36/2=72/r
r=72/36×7
=2×7
=14 cm.
area =πr^2/2
=22/7×14×14
=22×2×14
=616cm^2
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Answer 2

I Hope this will help you