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: 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 3: A Paint manufacturer sells paints in 1 litre cylindrical tins of diameter 14cm. How many such tins can he store one above the other in a store room of height 3.245 meters
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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 conical tent was is put up for a show supported by a pole of height 28 meters at the center. The diameter of the base is 42 meters. Find the cost of the canvas used at the rate of Rs.20/ per sq mts
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Q 6: 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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Q 7: 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 8: 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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