Question

7. A tent is in the shape of a cylinder surmounted by a conical top. If the height and
diameter of the cylindrical part are 2.1 m and 4 m respectively, and the slant height of the
top is 2.8 m, find the area of the canvas used for making the tent. Also, find the cost of
the canvas of the tent at the rate of Rs 500 per m2. (Note that the base of the tent will not
be covered with canvas.)​

Answer 1

Answer

Given:

Height (h) of the cylindrical part = 2.1 m

Diameter of the cylindrical part = 4 m

Radius of the cylindrical part = 2 m

Slant height (l) of conical part = 2.8 m

Area of canvas used = CSA of conical part + CSA of cylindrical part

=πrl+2πrh

=π×2×2.8+2π×2×2.1

=2π[2.8+4.2]

=2×

7

22

×7

=44m

2

Cost of 1 m

2

canvas =500 rupees

Cost of 44 m

2

canvas =44×500=22000 rupees.

Therefore, it will cost 22000 rupees for making such a tent.

Answer 2

Answer:

here is the ans i hope this will help you