Question

A dome of a building is in the form of a hemisphere. From inside it was white washed at a cost of 498.96 rs at a rate of 2 rs per sqm

Answer 1

so its CSA will be,

CSA of hemisphere=Total cost/Rate

= 498.96/2

= 249.48 sqm

Answer 2

Answer:

Step-by-step explanation:

After finding the inner surface area we multiply it to the cost @ of which it is painted.here using that tactic u can compare the inner surface area of hemisphere with the above given cost ,u will get radius , which u can use to find surface area