हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

Find the Capacity of a Cylindrical Container with an Internal Diameter of 28 Cm and a Height of 20 Cm.

Advertisements
Advertisements

प्रश्न

Find the capacity of a cylindrical container with an internal diameter of 28 cm and a height of 20 cm.

योग
Advertisements

उत्तर

Diameter = 28 cm
Radius = `28/2` cm = 14 cm
Height = 20 cm
Volume = πr2h = `22/7` x 14 x 14 x 20
Volume = 12320 cm3

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 23: Surface Area, Volume and Capacity - Exercise 21 (D) [पृष्ठ २४३]

APPEARS IN

सेलिना Concise Mathematics [English] Class 8 ICSE
अध्याय 23 Surface Area, Volume and Capacity
Exercise 21 (D) | Q 6 | पृष्ठ २४३

संबंधित प्रश्न

The floor of a rectangular hall has a perimeter 250 m. If the cost of panting the four walls at the rate of Rs.10 per m2 is Rs.15000, find the height of the hall.

[Hint: Area of the four walls = Lateral surface area.]


A cubical box has each edge 10 cm and another cuboidal box is 12.5 cm long, 10 cm wide and 8 cm high.

(i) Which box has the greater lateral surface area and by how much?

(ii) Which box has the smaller total surface area and by how much?


Parveen wanted to make a temporary shelter for her car, by making a box-like structure with tarpaulin that covers all the four sides and the top of the car (with the front face as a flap which can be rolled up). Assuming that the stitching margins are very small, and therefore negligible, how much tarpaulin would be required to make the shelter of height 2.5 m, with base dimensions 4 m × 3 m?


A 4 cm edge cube is cut into 1 cm edge cubes. Calculate the total surface area of all the small cubes.


Each edge of a cube is increased by 50%. Find the percentage increase in the surface area of the cube.


The dimensions of a rectangular box are in the ratio of 2 : 3 : 4 and the difference between the cost ofcovering it with sheet of paper at the rates of Rs. 8 and Rs. 9.50 per m2 is Rs.1248. Find the dimensions of the box.


A closed iron tank 12 m long, 9 m wide and 4 m deep is to be made. Determine the cost of iron sheet used at the rate of Rs. 5 per metre sheet, sheet being 2 m wide.


An open box is made of wood 3 cm thick. Its external length, breadth and height are 1.48 m, 1.16 m and 8.3 m. Find the cost of painting the inner surface of Rs 50 per sq. metre.


The dimensions of a room are 12.5 m by 9 m by 7 m. There are 2 doors and 4 windows in the room; each door measures 2.5 m by 1 .2 m and each window 1 .5 m by I m. Find the cost of painting the walls at Rs. 3.50 per square metre.


Find the volume of a cuboid whose length = 12 cm, breadth = 8 cm, height = 6 cm.


What will happen to the volume of a cuboid if its Length is doubled, height is doubled and breadth is sama?


Three cuboids of dimensions 5 cm × 6 cm × 7cm, 4cm × 7cm × 8 cm and 2 cm × 3 cm × 13 cm are melted and a cube is made. Find the side of cube.


Find the weight of solid rectangular iron piece of size 50 cm × 40 cm × 10cm, if 1 cm3 of iron weighs 8 gm.


Find the volume in cubic metre (cu. m) of the cuboid whose dimensions is length = 12 m, breadth = 10 m, height = 4.5 cm.


A water tank is 3 m long, 2 m broad and 1 m deep. How many litres of water can it hold?


The rainfall on a certain day was 6 cm. How many litres of water fell on 3 hectares of field on that day?


A rectangular water reservoir contains 105 m3 of water. Find the depth of the water in the reservoir if its base measures 12 m by 3.5 m.


The length of a hall is 18 m and the width 12 m. The sum of the areas of the floor and the flat roof is equal to the sum of the areas of the four walls. Find the height of the wall.


The number of cubes of side 3 cm that can be cut from a cuboid of dimensions 10 cm × 9 cm × 6 cm, is ______. 


If each edge of a cube is increased by 50%, the percentage increase in its surface area is


The length, breadth and height of a rectangular solid are in the ratio 5 : 4 : 2. If the total surface area is 1216 cm2, find the length, the breadth and the height of the solid.


Find the volume and the total surface area of a cuboid, whose :
length = 15 cm, breadth = 10 cm and height = 8 cm.


The dimension of a class-room are; length = 15 m, breadth = 12 m and height = 7.5 m. Find, how many children can be accommodated in this class-room; assuming 3.6 m3 of air is needed for each child.


Find the volume of wood required to make a closed box of external dimensions 80 cm, 75 cm, and 60 cm, the thickness of walls of the box being 2 cm throughout.


The sum of the radius and the height of a cylinder is 37 cm and the total surface area of the cylinder is 1628 cm2. Find the height and the volume of the cylinder.


In a building, there are 24 cylindrical pillars. For each pillar, the radius is 28 m, and the height is 4 m. Find the total cost of painting the curved surface area of the pillars at the rate of ₹ 8 per m2.


The surface area of a cuboid formed by joining face to face 3 cubes of side x is 3 times the surface area of a cube of side x.


Two cuboids with equal volumes will always have equal surface areas.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×