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A rocket is in the form of a circular cylinder closed at the lower end with a cone of the same radius attached to the top.

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A rocket is in the form of a circular cylinder closed at the lower end with a cone of the same radius attached to the top. The cylinder is of radius 2.5m and height 21m and the cone has a slant height 8m. Calculate total surface area and volume of the rocket?

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Given radius of cylinder (a) = 2.5m

Height of cylinder (h) = 21m

Slant height of cylinder (l) = 8m

Curved surface area of cone S1 = πrl

Total curved surface area = (1) + (2)

Subtracting ‘h’ value in (3)

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