Q 1: A mansion has 12 cylindrical pillars 0f 3.5 meters height and of circumference of 50cms. Find the cost of painting the lateral surface of the pillars at Rs 25 per Sq.meter.
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Q 2: The height of water level in a circular well is 7 meters and its diameter is 10 meters. Calculate the volume of water stored in the well.
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Q 3: A Gasolene tanker is made of sheet metal. If the tank’s length is 2.6 meters and the radius of the cylindrical tank is 140cm. How many sq meters of sheet metal is required to make the tank?
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Q 4: A roller having 70cms as diameter and length of 1 meter is used to level the playground in your school. If it makes 200 complete revolutions what is the area of playground?
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Q 5: A metal pipe has a bore (inner diameter) of 5cm. The pipe is 5mm thick throughout. Find the weight (in kg) of 2 meters of the pipe if 1 cubic cm of metal weighs 7.7gm.
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Q 6: When a iron shotput ball was immersed in a jar it spilled out approximately 1437cc of water. Find out the diameter of the shotput
The water spilled out is equal to volume of shotput
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Q 7: A rectangular water tank measuring 80cmx60cmx60cm is filled from a pipe of cross sectional area of 1.5sq cm, the water emerging at 3.2mts/sec. How long does it take to fill the tank?
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Q 8: A factory was asked to use sheet metal to make a conical object of slant height 8 meters with diameter of the base as 12 meters. How much sheet metal is required?
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