A solid composed of a cylinder with hemispherical ends . If the whole length of th solid is 108 and the diameter of the hemisphere ends is 36 , find the cost of painting it at the rate of 7 paise per sq.cm
Answers
Answered by
3
A :- Radius of hemisphere=36/2=18
In the given solid height of cylinder = 108 - 2{radius of hemisphere}
= 108 - 18 = 90
CSA of the solid = CSA of cylinder + CSA of both hemispheres
= 2*22/7*18*90 + 2 (2*22/7*18*18) = 14256 cm^2
Cost = 14256 *70 = Rs 9980
Read more on Brainly.in - https://brainly.in/question/2658205#readmore
In the given solid height of cylinder = 108 - 2{radius of hemisphere}
= 108 - 18 = 90
CSA of the solid = CSA of cylinder + CSA of both hemispheres
= 2*22/7*18*90 + 2 (2*22/7*18*18) = 14256 cm^2
Cost = 14256 *70 = Rs 9980
Read more on Brainly.in - https://brainly.in/question/2658205#readmore
Similar questions