2. A cylindrical oil tank has diameter 7 m and height 9 m. If the inne – InterviewSolution

1.	2. A cylindrical oil tank has diameter 7 m and height 9 m. If the inner side of the tank has to bepainted all over, what will it cost at 35 per square metre?3. In a circular well of diameter 3 m the denth of warer is 7 m. What is the quantity of water in
Answer» TSA of cylinder = 2πr(h+r) = 2 x 22/ 7 x 7/2 (9 +3.5) =22 x 12.5 = 275 m²cost = 275 x 35= rs 9625

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