SOLUTION: A sphere has a diameter of 7 centimeters. What is its surface area? Use 3.14 to approximate pi

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Question 958278: A sphere has a diameter of 7 centimeters. What is its surface area? Use 3.14 to approximate pi
Found 2 solutions by jim_thompson5910, Alan3354:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
SA+=+4%2Api%2Ar%5E2

SA+=+4%2Api%2A3.5%5E2 The diameter is 7 cm, so the radius is r=d%2F2=7%2F2=3.5 cm

SA+=+4%2A3.14%2A3.5%5E2

SA+=+153.86



The approximate surface area is 153.86 square cm.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A sphere has a diameter of 7 centimeters. What is its surface area? Use 3.14 to approximate pi
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SA+=+pi%2Ad%5E2+=+4pi%2Ar%5E2