10th Class
Mathematics
Surface Areas and Volumes
Question Bank
Surface Area and Volume (Mensuration)
question_answer
A right circular cone is enveloping a right circular cylinder that rests on the base of the cone. If the radius and the height of the cone is 4 cm and 10 cm respectively, the radius of the cylinder is ?r? cm and the largest possible curved surface area of the cylinder is \[\text{ }\!\!'\!\!\text{ }\!\!\pi\!\!\text{ }\,\,\text{ar(b-r) }\!\!'\!\!\text{ ,}\] then \[a\times b=?\]