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Question

The ratio of base radius to slant height of a right circular cone is 3:2. Calculate the ratio of total surface area of cone to curved surface area of the cone.(Take π=227). [3 MARKS]

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Solution

Concept: 1 Mark
Formula: 1 Mark
Application: 1 Mark

rl=32

Total surface of cone=πr(l+r)

Curved Surface area of the cone =πrl

Their ratio πr(l+r)πrl=l+rl

1+rl=5:2


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