Advertisements
Advertisements
प्रश्न
Find the volume of the cylinder if the circumference of the cylinder is 132 cm and height is 25 cm.
उत्तर
Given: Circumference of the base of cylinder = 132 cm and height h = 25 cm
Circumference of base of cylinder = 2πr
⇒ 132 = 2πr
⇒ 132 = `2 xx 22/7` r
⇒ r = `(132 xx 7)/(2 xx 22)`
⇒ r = `924/44`
⇒ r = 21 cm
Height = 25 cm
Volume = πr2h
= `22/7 xx 21 xx 21 xx 25`
= 22 × 3 × 21 × 25
= 34650 cm3
संबंधित प्रश्न
The inner radius of a pipe is 2.1 cm. How much water can 12 m of this pipe hold?
The height and the radius of the base of a cylinder are in the ratio 3 : 1. If it volume is 1029 π cm3; find it total surface area.
The height of a circular cylinder is 20 cm and the radius of its base is 7 cm. Find : the total surface area.
A cylinder has a diameter of 20 cm. The area of the curved surface is 100 cm2 (sq. cm). Find the volume of the cylinder correct to one decimal place.
A cylindrical glass with diameter 20 cm has water to a height of 9 cm. A small cylindrical metal of radius 5 cm and height 4 cm is immersed it completely. Calculate the raise of the water in the glass?
In a hollow cylinder, the sum of the external and internal radii is 14 cm and the width is 4 cm. If its height is 20 cm, the volume of the material in it is
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.
30 circular plates, each of radius 14 cm and thickness 3 cm are placed one above the another to form a cylindrical solid. Find volume of the cylinder so formed.
The dimensions of a godown are 40 m, 25 m and 10 m. If it is filled with cuboidal boxes each of dimensions 2 m × 1.25 m × 1 m, then the number of boxes will be ______.
The volume of a cylinder whose radius r is equal to its height is ______.
