5. Find the area and perimeter of a semicircle whose radius is 21 cm.
Answers
Answered by
0
Answer:
it's 10
1
_
2
this is helpful follow me
Answered by
2
Step-by-step explanation:
Area-
radius of semicircle = 21cm
then. = 22/7×21×21×1/2
= 11×3×21
= 693cm^2
peramiter-
radius of semicircle=21cm
then. =22/7×21
=22×3
=66 cm
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