Advertisements
Advertisements
प्रश्न
The weight of a metal block of size 5 cm by 4 cm by 3 cm is 1 kg. Find the weight of a block of the same metal of size 15 cm by 8 cm by 3 cm.
Advertisements
उत्तर
\[\text { The weight of the metal block of dimension 5 cm }\times 4 cm \times 3 \text { cm is 1 kg } . \]
\[\text { Its volume = length } \times \text { breadth }\times \text { height } = (5 \times 4 \times 3) {cm}^3 = 60 {cm}^3 \]
\[\text { i . e . , the weight of 60 } {cm}^3\text { of the metal is 1 kg }\]
\[\text { Again, the dimension of the other block which is of same metal is 15 cm } \times 8 cm \times 3 cm . \]
\[\text { Its volume = length } \times \text { breadth } \times \text { height }= (15 \times 8 \times 3) {cm}^3 = 360 {cm}^3 \]
\[ \therefore \text { The weight of the required block } = 360 {cm}^3 \]
\[ = 6 \times 60 {cm}^3 ( \because \text { Weight of 60 }{cm}^3 \text { of the metal is 1Kg })\]
\[ = 6 \times 1 kg\]
\[ = 6 kg\]
संबंधित प्रश्न
Daniel is painting the walls and ceiling of a cuboidal hall with length, breadth, and height of 15 m, 10 m, and 7 m, respectively. From each can of paint, 100 m2 of area is painted. How many cans of paint will she need to paint the room?
Find the height of a cuboid of volume 100 cm3, whose length and breadth are 5 cm and 4 cm respectively.
Find the surface area of a cuboid whoselength = 3.2 m, breadth = 30 dm, height = 250 cm.
The volume of a cube whose surface area is 96 cm2, is
If l is the length of a diagonal of a cube of volume V, then
The volume of a cuboid is 3456 cm3. If its length = 24 cm and breadth = 18 cm ; find its height.
The capacity of a rectangular tank is 5.2 m3 and the area of its base is 2.6 x 104 cm2; find its height (depth).
A room is 5m long, 2m broad and 4m high. Calculate the number of persons it can accommodate if each person needs 0.16m3 of air.
All six faces of a cuboid are ______ in shape and of ______ area.
Find the length of the largest pole that can be placed in a room of dimensions 12 m × 4 m × 3 m.
