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
The ratio of the radius and height of a cylinder is 2:3. If its volume is
12,936 cm3, find the total surface area of the cylinder.
Metallic discs of radius 0.75 cm and thickness 0.2 cm are melted to
obtain 508.68 cm3 of metal. Find the number of discs melted
(use π = 3.14).
A housing society consisting of 5,500 people needs 100 L of water
per person per day. The cylindrical supply tank is 7 m high and has
a diameter 10 m. For how many days will the water in the tank last
for the society?
A swimming pool is 200 m by 50 m and has an average depth of 2 m.
By the end of a summer day, the water level drops by 2 cm. How
many cubic metres of water is lost on the day?
Three cubes each of side 10 cm are joined end to end. Find the
surface area of the resultant figure
A hollow garden roller of 42 cm diameter and length 152 cm is made
of cast iron 2 cm thick. Find the volume of iron used in the roller
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