Advertisements
Advertisements
प्रश्न
The external dimensions of a closed wooden box are 48 cm, 36 cm, 30 cm. The box is made of 1.5 cm thick wood. How many bricks of size 6 cm x 3 cm x 0.75 cm can be put in this box?
Advertisements
उत्तर
Given internal dimensions are
`l=48-2xx"thickness"=48-3=45cm`
`b=36-3=33cm`
`h=30-3=27cm`
∴ Internal volume =`45xx33xx27cm^3`
Volume of brick = `5xx3xx0.75cm^3`
Hence, number of bricks= `"Internal volume"/"volume of 1 brick"`
`=(45xx33xx27)/(6xx3xx0.37)`
`=(38880)/13.5`
`=2970`
`∴2970 "bricks can be kept inside the box"`
APPEARS IN
संबंधित प्रश्न
If V is the volume of a cuboid of dimensions a, b, c and S is its surface area, then prove that
`1/V=2/S(1/a+1/b+1)`
Three metal cubes with edges 6 cm, 8 cm and 10 cm respectively are melted together and formed into a single cube. Find the volume, surface area and diagonal of the new cube.
Two cubes, each of volume 512 cm3 are joined end to end. Find the surface area of the resulting cuboid.
A metal cube of edge 12 cm is melted and formed into three smaller cubes. If the edges of the two smaller cubes are 6 cm and 8 cm, find the edge of the third smaller cube.
A field is 200 m long and 150 m broad. There is a plot, 50 m long and 40 m broad, near thefield. The plot is dug 7 m deep and the earth taken out is spread evenly on the field. Byhow many meters is the level of the field raised? Give the answer to the second place of decimal.
A rectangular tank is 80 m long and 25 m broad. Water flows into it through a pipe whose cross-section is 25 cm2, at the rate of 16 km per hour. How much the level of the water rises in the tank in 45 minutes.
Find the volume of a cuboid whose dimensions are length = 12 cm, breadth = 8 cm, height = 6 cm
The dimensions of a match box are 6 cm × 3.5 cm × 2.5 cm. Find the volume of a packet containing 12 such match boxes
How many bricks of size 22 cm × 10 cm × 7 cm are required to construct a wall 11 m long, 3.5 m high and 40 cm thick, if the cement and sand used in the construction occupy (1/10)th part of the wall?
