1. The whole surface area of a cuboid 24 cm long, 14 cm broad and 7.5 cm high, is
(a) 2520 cm^2
(b) 1260 cm^2
(c) 1242 cm^2
(d) 621 cm^2
2. The length of the diagonal of a cuboid 30 cm long, 24 cm broad and 18 cm high, is
(a) 30 cm
(b) 15√2 cm
(c) 30√2 cm
(d) 60 cm
3. The area of the base of a rectangular tank is 6500 cm^2 and the volume of water contained in it is 2.6 m^3. The depth of the water in the tank is
(a) 2.5 m
(b) 3 m
(c) 5.5 m
(d) 4 m
4. A rectangular marble stone 28 cm wide and 5 cm thick weight 112 kg. If 1 cm^3 of marble weights 25 cm, then length of given stone is
(a) 36 cm
(b) 37.5 cm
(c) 32 cm
(d) 26.5 cm
5. The sum of the length, breadth and depth of a cuboid is 19 cm and its diagonal is 5√5 cm. Its surface area is
(a) 125 cm^2
(b) 236 cm^2
(c) 361 cm^2
(d) None of these
6. The surface area of a (10 cm×4 cm×3 cm) brick is
(a) 84 cm^2
(b) 124 cm^2
(c) 164 cm^2
(d) 180 cm^2
7. Two cubes have their volume in the ratio 1 : 27. The ratio of their surface areas is
(a) 1 : 3
(b) 1 : 8
(c) 1 : 9
(d) 1 : 18
8. If a+b = 5 and 3a + 2b = 20, then (3a+b) is equal to
(a) 10
(b) 15
(c) 20
(d) 25
9. A metal wire when bent in the from of a square encloses an area 484 cm^2. If the same wire is bent in the from of a circle, then (tanking π = 22/7) its area is
(a) 308 cm^2
(b) 506 cm^2
(c) 600 cm^2
(d) 616 cm^2
10. In a cyclic quadrilateral ABCD, if ∠B -∠D = 60°, then the measure of the smaller of the two is
(a) 60°
(b) 40°
(c) 38°
(d) 30°
Note : Answers will be updated soon...............
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