Advertisements
Advertisements
प्रश्न
An ice-cream brick measures 20 cm by 10 cm by 7 cm. How many such bricks can be stored in deep fridge whose inner dimensions are 100 cm by 50 cm by 42 cm?
Advertisements
उत्तर
\[\text { Dimension of an ice cream brick = 20 cm } \times 10 cm \times 7 cm\]
\[\text { Its volume = length } \times \text { breadth } \times\text { height } = (20 \times 10 \times 7) {cm}^3 = 1400 {cm}^3 \]
\[\text { Also, it is given that the inner dimension of the deep fridge is 100 cm } \times 50 cm \times 42 cm . \]
\[\text { Its volume = length } \times\text { breadth } \times \text { height } = (100 \times 50 \times 42) {cm}^3 = 210000 {cm}^3 \]
\[ \therefore \text { The number of ice cream bricks that can be stored in the fridge }= \frac{\text { volume of the fridge }}{\text { volume of an ice cream brick }} = \frac{210000 {cm}^3}{1400 {cm}^3} = 150\]
संबंधित प्रश्न
A small indoor greenhouse (herbarium) is made entirely of glass panes (including base) held together with tape. It is 30 cm long, 25 cm wide and 25 cm high. How much of tape is needed for all the 12 edges?
Find the lateral surface area and total surface area of a cuboid of length 80 cm, breadth 40 cm and height 20 cm.
Each edge of a cube is increased by 50%. Find the percentage increase in the surface area of the cube.
The length and breadth of a hall are in the ratio 4: 3 and its height is 5.5 metres. The cost of decorating its walls (including doors and windows) at Rs. 6.60 per square metre is Rs. 5082. Find the length and breadth of the room.
What will be the height of a cuboid of volume 168 m3, if the area of its base is 28 m2?
Three equal cubes are placed adjacently in a row. The ratio of the total surface area of the resulting cuboid to that of the sum of the surface areas of three cubes, 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.
A room 5 m long, 4.5 m wide, and 3.6 m high have one door 1.5 m by 2.4 m and two windows, each 1 m by 0.75 m. Find :
(i) the area of its walls, excluding door and windows ;
(ii) the cost of distempering its walls at the rate of Rs.4.50 per m2.
(iii) the cost of painting its roof at the rate of Rs.9 per m2.
An open box of length 1.5 m, breadth 1 m, and height 1 m is to be made for use on a trolley for carrying garden waste. How much sheet metal will be required to make this box? The inside and outside surface of the box is to be painted with rust-proof paint. At a rate of 150 rupees per sqm, how much will it cost to paint the box?
Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant figure.
