Question

The ratio of the total surface are to the curved surface area of the right circular cylinder is 3:2. Find the total surface area in terms of radius.

Answer 1

Answer:

Step-by-step explanation:

CSA=2Pi×r×h

TSA=2Pi×r(h+r)

according to the question.

2pi×r×(h+r)

---------------- = 3÷2

2pi×r×h

(h+r)÷h=3÷2

2r=h

by TSA FORMULA

2pi×r(2r+r)=14784

6pi×r×r=14784

r×r=784

r=28

NOW VOLUME =pi×r×r×h

22÷7×28×28×2×28

137984cm2

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