16 Surface area and Volume

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1. Find how many litre of water will a cuboidal fish tank contain if its length, breadth and height are 1 m, 40 cm and 50 cm respectively 1) 100 litre 2) 150 litre 3) 220 litre 4) 200 litre

2. The length and height of a cuboidal warehouse is 6m, 4m and 4m respectively. How many cube shaped boxes of side 40 cm will fill the warehouse completely ? 1) 500 2) 2400 3) 1200 4) 1500

3. If 5 litre molten mixture of khoa and sugar is poured in a tray it fills to its full capacity. Find the length of the tray if its breadth is 40 cm and height is 2.5 cm 1) 50 cm 2) 5 cm 3) 150 cm 4) 15 cm

4. A water tank of cylindrical shape has diameter 1 m and height 2 m. Tank is closed with lid. The tank is to be painted internally and externally including the lid. the Find the expenditure if the rate of painting is Rs. 80 per sqm 1) Rs. 1200 2) Rs.1512 3) Rs 1256 4) Rs 1500

5. A zinc sheet is of length 3.3 m and breadth 3 m. How many pipes of length 30 cm and radius 3.5 cm can be made from this sheet? 1) 120 2) 160 3) 150 4) 50

6. Find the volume of a cylinder whose height is 10 cm and radius of base is 5 cm 1) 758 cc 2) 570 cc 3) 750 cc 4) 785 cc

7. Height of a cylindrical drum is 56 cm. Find the radius of the drum if the capacity of that drum is 70.4 litr 1) r = 12 2) r = 40 3) r = 25 4) r = 20

8. Radius of a solid copper cylinder is 4.2 cm and its height is 16 cm. How many discs of diameter 1.4 cm and thickness 0.2 cm can be made from this cylinder melting it 1) 2880 2) 2800 3) 288 4) 8200