Question

34. A tent of plastic and other combustible material is of the shape of a right circular cylinder of height
9 m and above it a cone of height 15 m. The diameter of the cylinder as well as of surmounted.consis
16 m. Compute cost of painting the inner side of the tent at the rate of 20 per square metre
f the hace of a cylinder open at the top is 132 cm. The sum of radius and height of the​

Answer 1

Answer:

The cost of painting the inner side of the tent at rate of rupees 20 per square metre is 16594.2 Rs

Step-by-step explanation:

Area that is to be painted.

Area to be painted = CSA of cone + CSA of cylinder

Area to be painted = πrl + 2πrh

Area to be painted = π .r ( l + h)

                               = 22 / 7 x 8 ( 15+ 18)

                               = 22 / 7 x 8 x 33

Area to be painted = 5808 / 7 = 829.71 m^2

Now cost of painting = 829.71 x 20 = 16594.2 Rs

Hence the cost of painting the inner side of the tent at rate of rupees 20 per square metre is 16594.2 Rs

Also learn more

The area of a rectangular playground is 4800 m^2. Find the cost of covering it with gravel 1 cm deep,If the gravel costs ₹260 per cubic metre. ?