Advertisements
Advertisements
प्रश्न
Volume of a cylinder is 330 cm3. The volume of the cone having same radius and height as that of the given cylinder is:
विकल्प
330 cm3
165 cm3
110 cm3
220 cm3
उत्तर
110 cm3
Explanation:
Volume of a cylinder is 330 cm3.
Volume of a cylinder = πr2h
Volume of the cone = `1/3 πr^2h`
Volume of the cone = `1/3` × Volume of a cylinder
Volume of the cone = `1/3` × 330 cm3
Volume of the cone = 110 cm3
APPEARS IN
संबंधित प्रश्न
Water flows, at 9 km per hour, through a cylindrical pipe of cross-sectional area 25 cm2. If this water is collected into a rectangular cistern of dimensions 7.5 m by 5 m by 4 m; calculate the rise in level in the cistern in 1 hour 15 minutes.
How many cubic meters of earth must be dug out to make a well 28 m deep and 2.8 m in diameter? Also, find the cost of plastering its inner surface at Rs. 4.50 per sq.meter.
A cylinder has a diameter of 20 cm. The area of the curved surface is 100 cm2 (sq. cm). Find the height of the cylinder correct to one decimal place.
A cylinder of circumference 8 cm and length 21 cm rolls without sliding for `4 1/2` seconds at the rate of 9 complete rounds per second. Find the area covered by the cylinder in `4 1/2` seconds.
Two solid cylinders, one with diameter 60 cm and height 30 cm and the other with radius 30 cm and height 60 cm, are metled and recasted into a third solid cylinder of height 10 cm. Find the diameter of the cylinder formed.
If the radius of a cylinder is doubled and height is halved, the volume will be doubled.
A school provides milk to the students daily in a cylindrical glasses of diameter 7 cm. If the glass is filled with milk upto an height of 12 cm, find how many litres of milk is needed to serve 1600 students.
If the height of a cylinder becomes `1/4` of the original height and the radius is doubled, then which of the following will be true?
From a pipe of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in 1 hour.
A rectangular sheet of paper is rolled in two different ways to form two different cylinders. Find the volume of cylinders in each case if the sheet measures 44 cm × 33 cm.
