Question

The slant height and base diameter of a conical tomb are 25 m and 14 m respectively.
Find the cost of white-washing its curved surface at the rate of 210 per 100 metre square?​

Answer 1

Step-by-step explanation:

Curved surface area of a cone =πrl, where r is the radius of the cone and l is the slant height.

Radius of the tomb =

2

Diameter

=7m

Hence, CSA of this conical tomb , =

7

22

×7×25=550 sq. m.

Cost of white washing the tomb at Rs. 210 per 100m

2

=

100

210

×550= Rs. 1155