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A solid sphere of diameter 17.5 cm is cut into two equal halves. What will be the increase (in sq. cm) in the total surface area?
- A289
- B361.5
- C481.25
- D962.5
Answer not set
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0
CCommunity
option 3 : 481.25 is correct
0
CCommunity
T.S.A of sphere =4×22/7×8.75×8.75=962.5
T.S.A of 2 hemisphere=2(3×22/7×8.75×8.75)=1443.75
1443.75-962.5=481.25
Hence,the correct answer is 481.25
T.S.A of 2 hemisphere=2(3×22/7×8.75×8.75)=1443.75
1443.75-962.5=481.25
Hence,the correct answer is 481.25