Question

A slant height and base diameter od a conical tomb are 25 & 14m. Find the cost of white washing the CSA at rate of Rs. 210/100m^2

Answer 1

Heya,

Given:-
Length = 25m
Diameter = 14m
Radius = 14/2 = 7m

To find:-
CSA of the conical tomb

Solution:-
CSA = Πrl
CSA = 22/7 × 7 × 25
CSA = 22 × 25
CSA = 550m^2

Cost of white washing = 210/100 × 550 [Rs.210/100m^2]
Cost of white washing = 21 × 55 = Rs.1155

Hope my answer helps you :)

Regards,
Shobana