He Greumterence of the base of a cylinder Is \( 176 \mathrm { cm } \) and its height is \( 65 \mathrm { cm } \). Find (i) isteral surface area. Whe radii of two cyllnders are In the ratlo 2: 3 and thelr heights are in the ratio 5: 3. Calculate the ratio of their curved surface areas.

Question

He Greumterence of the base of a cylinder Is \( 176 \mathrm { cm } \) and its height is \( 65 \mathrm { cm } \). Find (i) isteral surface area. Whe radii of two cyllnders are In the ratlo 2: 3 and thelr heights are in the ratio 5: 3. Calculate the ratio of their curved surface areas.

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