the radius of a sphere is 21cm.what is the surface area of the sphere ?
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Answered by
16
Radius, r = 21 cm
So, surface area = 4πr²
= 4*22/7*21*21
= 4*22*3*21
= 5544 cm²
So, surface area = 4πr²
= 4*22/7*21*21
= 4*22*3*21
= 5544 cm²
Answered by
1
Answer:
5544cm^2
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