CBSE Class 9 Maths Surface Area of a Cylinder
 the total surface area of hollow metal cylinder open at both ends of a internal radius 8cm and height 10cm is 388πcm²(ignoring the area of rims ).find the thickness of the metal in the cylinder
 To find formula for the curved serface area of right circullar cylender expermentally
 What is the volume of a right circular cylinder whose base area is 606cm² and whose height is 2m
 The radius of a right circular cylinder with curved surface area of 440 cm^{2} and an altitude of 5 cm is

the radius of sphere is 2r, then its volume will be?
 a cylindrical vessel filled with water has internal diameter 7.8cm and height 28cm. it's entire water is put in a rectangular tube whose base is a square of side 26cm.find the height of water in tube?
 find the diameter of a cylinder whose height is 5cm and numerical value of volume is equal to numerical alue of curved surface area
 A hollow cylindrical tube, open at both ends is made of iron 1 cm thick. If the external diameter is 14 cm and the length of tube is 70 cm, Find the cost of painting its inner surface at the rate of Rs. 4 per cm^{2}.
 The diameter of a roller 1 m long is 56 cm. If it takes 200 revolutions to level a playground, find the cost of levelling the playground at the rate of 50 paisa per m^{2}.
 Find the lateral surface area (curved surface area) of a hollow cylinder open at the ends of length is 14 cm, the external diameter is 10 cm and the thickness is 2 cm.