How many bricks of size 22 cm × 10 cm × 7 cm are required to
construct a wall 11m 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?
The length, breadth and height of a cuboidal reservoir is 7 m, 6 m
and 15 m respectively. 8400 L of water is pumped out from the
reservoir. Find the fall in the water level in the reservoir.
A cylindrical tank has a radius of 154 cm. It is filled with water to a
height of 3 m. If water to a height of 4.5 m is poured into it, what will
be the increase in the volume of water in kl?
Four times the area of the curved surface of a cylinder is equal to 6
times the sum of the areas of its bases. If its height is 12 cm, find its
curved surface area.
From a pipe of inner radius 0.75 cm, water flows at the rate of 7 m
per second. Find the volume in litres of water delivered by the pipe
in 1 hour
A rectangular sheet of dimensions 25 cm × 7 cm is rotated about its
longer side. Find the volume and the whole surface area of the solid
thus generated.
What will happen to the volume of the cube, if its edge is (a) tripled
(b) reduced to one-fourth?
The capacity of a closed cylindrical vessel of height 1 m is 15.4 L. How
many square metres of metal sheet would be needed to make it?
External dimensions of a closed wooden box are in the ratio 5:4:3. If
the cost of painting its outer surface at the rate of Rs 5 per dm2 is Rs
11,750, find the dimensions of the box
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