Volume of a right circular cylinder
(1) r = 7 cm, h = 10 cm
(2) r = 1.4 cm, h = 2.1 cm
(3) r = 2.5 cm, h = 7 cm
(4) r = 70 cm, h = 1.4 cm
(5) r = 4.2 cm, h = 14 cm
the diameter of a garden roller is 1.4 m and it is 2m long. how much area it will cover in 4 revolutions?
Water flows through a cylindrical pipe whose inner radius is , at the rate of in an empty cylindrical tank, the radius of whose base is . What is the rise of water level in tank in half an hour?
250 cylinders cups have to be filled with soup. If the height of the bowl is 4cm and diameter is 7 cm find the total volume of the soup required.(1000cm3=1L)
A company packages its milk powder in the cylindrical container whose base has a diameter of 14cm and height 20cm. Company places a label around the surface of the container (as shown in the figure). If the label is placed 2cm from top and bottom, what is the surface area of the label.
- None of these
An iron tank with an open top is cylindrical in shape. It has a height 10m and radius 7m. It gets corroded at a rate of 3 sq. meter/day. The number of days in which it gets completely corroded is (Take pi=227)
How many cylindrical containers of r = 0.5cm and h= 7cm is required to completely filled a cylindrical container of radius 5 cm and height 14 cm?
Find the volume of the model rocket.
The number of coins, each of radius 0.75 cm and thickness 0.2 cm, to be melted to make a right circular cylinder of height 8 cm and base radius 3 cm is
- 720 dm
- 18 dm
- 6 dm
- 2h dm
- None of these
A cricket ball of radius r is exactly fitted in a cylindrical tin as shown in the figure below. The ratio of surface area of cricket ball to the surface area of the tin is