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 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 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 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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