diameter of a sphere is 21 cm. Find its surface area
Answers
Answered by
4
Hey dear...
Your answer is...
Formula of finding surface area of sphere : 4πr²
Diameter :21cm
Radius : 21/2= 10.5cm
Surface area = 4 × 22/7 ×10.5× 10.5 = 1385.44cm
Hope this helps. Thank you.
Your answer is...
Formula of finding surface area of sphere : 4πr²
Diameter :21cm
Radius : 21/2= 10.5cm
Surface area = 4 × 22/7 ×10.5× 10.5 = 1385.44cm
Hope this helps. Thank you.
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Answered by
5
diameter = 21
radius = 21/2
area of sphere = 4 pi r^2
4× 22/7 × 21/2 × 21/2
= 1386 cm square.
hope it helps you.
radius = 21/2
area of sphere = 4 pi r^2
4× 22/7 × 21/2 × 21/2
= 1386 cm square.
hope it helps you.
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