Math, asked by sshashi93378, 3 months ago

Find the surface area of a sphere of diameter 21cm with expliantion

Answers

Answered by mngoel

0

Answer:

A≈1385.44cm²

Using the formulas

A=4πr2

d=2r

Solving forA

A=πd2=π·212≈1385.44236cm²

Answered by sakshi12360

2

Step-by-step explanation:

surface area of sphere = 4πr^2

surface area = 4× 22/7×21/2×21/2

surface area= 22× 63

surface area = 1386 sq.cm

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