1. A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of areas of the four walls, the volume of the hall is:
(a) 720
(b) 800
(c) 1200
(d) 2000

2. The sum of the length, breadth and depth of a cuboid is 19 cm and its diagonal is cm. It surface area is:
(a) 127 cm2
(b) 236 cm2
(c) 361 cm2
(d) 480 cm2

3. A swimming pool 9 m wide and 12 m long is 1 m deep on the shallow side and 4 m deep on the deeper side. Its volume is:
(a) 309 m3
(b) 270 m3
(c) 360 m3
(d) 607 m3

4. A metallic sheet is of rectangular shape with dimensions 48 m × 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:
(a) 5835
(b) 6400
(c) 6420
(d) 9260

5. An open box is made of wood 3 cm thick. Its external dimensions are 1.46 m, 1.16 m and 8.3 dm. The cost of painting the inner surface of the box at 50 paise per 100 sqr cm is:
(a) Rs. 140
(b) Rs. 277
(c) Rs. 415.50
(d) Rs. 650

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