Total surface area of a cylinder with height 5 centimetre is 88 square centimetre find the radius
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The radius is 2 centimetre
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Answer:
Step-by-step explanation:
TSA=2πrh +2πr²
88= 2×22/7×r×5+2×22/7×r²
88=220r/7 + 44r²/7
44r²+220r-616=0
r²+5r-14=0
(r+7)(r-2)=0
r= -7 or 2 but r can't be negative
So, r=2
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