Mathematics
A rectangular piece of paper 10 cm by 8 cm is rolled along its width to get the cylinder of largest size. The curved surface area of the cylinder formed is :
44 cm2
20 cm2
80 cm2
80 cm2
Related Questions
The radius and the length of a cylindrical rod are 5 cm and 10 cm respectively. Its lateral surface area is :
10 cm2
50 cm2
75 cm2
none of these
The formula for the volume of the cylindrical pipe is :
π(R + r) h
π(R — r)h
π(R2 + r2) h
π(R2 - r2) h
Find the height of the cylinder whose radius is 7 cm and the total surface area is 1100 cm2.
The ratio between the curved surface area and the total surface area of a cylinder is 1 : 2. Find the ratio between the height and the radius of the cylinder.