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### High School Mathematics - 28.17 Solid Geometry

 Q 1: 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. Answer: Q 2: 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 Answer: Q 3: 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. Answer: Q 4: 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 Answer: Q 5: 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? Answer: Q 6: 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? Answer: Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!