Mathematics
A solid cone of height 3 cm and radius 3 cm is recast into solid cylinder each of height 1 cm and radius 1 cm. Assertion(A): Number of cylinders formed = 1/3 x 3 x 3 x 3 Reason(R): Number of cylinders formed = 1. A is true, R is false. 2. A is false, R is true. 3. Both A and R are true and R is correct reason for A. 4. Both A and R are true and R is incorrect reason for A.
Related Questions
The given figure shows a toy made of very thin metal sheet. The toy has the hemisphere, a cylinder and a cone all of the same radius.
Assertion(A): The minimum area of metal sheet required is:
Curved surface area of conical part + curved surface area of cylinder part - curved surface area of hemispherical part
Reason(R): Metal sheet required = curved surface area of (conical part + cylindrical part + hemispherical part)
A is true, R is false.
A is false, R is true.
Both A and R are true and R is correct reason for A.
Both A and R are true and R is incorrect reason for A.