A rectangular piece of paper 16 cm by 3.5cm is rotated about the longer side. Find the total surface area of the solid so generated. GIVE ME THE EXACT ANSWER FOR THIS QUESTION (only for cross checking my answer).
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circumference =16 cm
radius =16/2#=28/11 .......#=pie
height=3.5 cm
surface area = #r^2h
=(22×28×28*3.5)/7*11*11
=71.28 cm^2
radius =16/2#=28/11 .......#=pie
height=3.5 cm
surface area = #r^2h
=(22×28×28*3.5)/7*11*11
=71.28 cm^2
Answered by
2
Hello,
I am Vedant Singh.
96.72cm² is the correct answer.
For Step by step explanation please see the picture.
Hope it Helps You.
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