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What is the total surface area of the given figure?

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π r (l + h)

π r (l + 2 h)

π (r l + 2 h)

π r l + 2 h

answer is B.

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Detailed Solution

Given figure,
Question Image

We have the following formulae,
The surface area of a cone =

π r l

The surface area of the cylinder =

2 π r h

.
Then the total surface area of the figure will be,
TSA = Surface area of cone + Surface area of the cylinder

= π r l + 2 π r h

= π r (l + 2 h)

Thus, the total surface area of the given figure will be

π r (l + 2 h)

.
Therefore the correct option is 2.

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