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Question 1
A cubical rectangular bar has the dimensions with the ratio 5 : 4 : 3. Its volume is 7500. What is the surface area of the bar?
Question 2
what is the radius of the circular plate of thickness 1cm made by melting a sphere of radius 3cm?
Question 3
If the perimeter and the diagonal of a rectangle is 18 cm and √41 cm respectively. Calculate the area of the rectangle?
Question 4
Find the volume, surface area and the length of daignol of a cuboid 12m long, 9m broad, 8m high?
Question 5
The daignol of a cube is 4√3 . Find volume and surface area.
Question 6
A wall is 8m long, 6m high and 22.5 cm thick is made up of bricks each measuring 25cm * 11.25cm * 6cm . Find the number of bricks required to bulid the wall.
Question 7
Find the volume and surface area of sphere of daimeter 42cm.
Question 8
Find the volume, curved surface area and total surface area of a hemisphere of radius 21 cm.
Question 9
A copper sphere of daimeter 18 cm is drawn into a wire of daimeter 4mm. Find the length of the wire.
Question 10
A cone is 8.4cm high and radius of the base is 2.1cm. It is melted and recasted into a sphere. Find the radius of the sphere.
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page 1 out of 3