Question

The interior of a building is in the form of a right circular cylinder of radius 7m and height 6m surmounted by a right circular cone of the same radius and of vertical angle 60 degree. Find the cost of painting the building from inside at the rate of Rs30 per m square

Answer 1

Here,
.............................
The R1 is the base of the cylinder
.…......….................
The R2 is the base of cone
...............................
The H1 is the height of the cylinder

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