1) Q.1: Hameed has built a cubical water tank with a lid for his house, with each outer edge 1.5 m long. He gets the outer surface of the tank excluding the base, covered with square tiles of side 25 cm (see in the figure below). Find how much he would spend on the tiles if the cost of the tiles is Rs.360 per dozen. a) 5400 b) 5300 c) 5200 d) 5100 2) Q.2: The paint in a certain container is sufficient to paint an area equal to 9.375 sq.m. How many bricks of dimensions 22.5 cm × 10 cm × 7.5 cm can be painted out of this container? a) 120 b) 100 c) 110 d) 99 3) Q.3: The curved surface area of a right circular cylinder of height 14 cm is 88 sq.cm. Find the diameter of the base of the cylinder. a) 2 cm. b) 1.5cm c) 3cm d) 4cm 4) Q.4: The height of a cone is 16 cm and its base radius is 12 cm. Find the total surface area of the cone. (Take π = 3.14) a) 1205.76 cm2 b) 1300cm2 c) 1100 cm2 d) 1150 cm2 5) Q.5: The radius of a spherical balloon increases from 7 cm to 14 cm as air is being pumped into it. Find the ratio of surface areas of the balloon in the two cases. a) 1 : 4. b) 1:5 c) 2:4 d) 3:5 6) A capsule of medicine is in the shape of a sphere of diameter 3.5 mm. How much medicine (in mm3) is needed to fill this capsule? a) 25mm3 b) 24mm3 c) 30mm3 d) 22.458 mm3 7) A spherical ball is divided into two equal halves. Given that the curved surface area of each half is 56.57 cm, what will be the volume of the spherical ball? a) 140 cm3 b) 190 cm3 c) 113.04 cm3 d) 198cm3

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