Page 1 :
ari, , 18,, , 19,, , 20., , ai., , 22,, , 23., , CLASS TR, The ratio between the curved surface area and the total surface area of 4, right cireular cylinder is 1: 2, Find the volume of the cylinder if itg total, surface area is 616 em’,, A cylindrical bucket, 28 em in diameter and 72 em high, is full of Water, The water is emptied into a rectangular tank, 66 em long and 28 cm, Wide, Find the height of the water level in the tank,, The barrel of a fountain pen, cylindrical in shape, is 7 em long and, 5mm in diameter, A full barrel of ink in the pen will be used UP on, writing 330 words on an average. How many words would use Up a, bottle of ink containing one fifth of a litre?, | cm’ of gold is drawn into a wire 0.1 mm in diameter. Find the length, of the wire., If 1 cm* of cast iron weighs 21 g, find the weight of a cast iron pipe, of length 1 m with a bore of 3 em in which the thickness of the meta], is Lem., A cylindrical tube, open at both ends, is made of metal. The internal, diameter of the tube is 10.4 em and its length is 25 cm. The thickness of, the metal is 8 mm everywhere. Calculate the volume of the metal., It is required to make a closed cylindrical tank of height 1m and base, diameter 140 cm from a metal sheet, How many square metres of the, sheet are required for the same?