1408. I. x<sup>2
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A. If x ? y

B. If x > y

C. If x < y

D. If x = y or the relationship between x and y cannot be established.
1414. The edges of cuboid are 4 cm; 5 cm and 6 cm. Find its surface area?
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A. 74 cm<sup>2</sup>

B. 148 cm2

C. 120 cm<sup>2</sup>

D. 15 cm<sup>2</sup>

1418. (i). a<sup>2
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A. if a < b

B. if the relationship between a and b cannot be established.

C. if a ? b

D. if a > b
1421. H.C.F of 3240, 3600 and a third number is 36 and their L.C.M is 2<sup>4
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A. 22* 35* 72

B. 2<sup>2</sup>* 5<sup>3</sup>* 7<sup>2</sup>

C. 2<sup>5</sup>* 5<sup>2</sup>* 7<sup>2</sup>

D. 2<sup>3</sup>* 3<sup>5</sup>* 7<sup>2</sup>

1428. The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.
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A. 48 ? cm2

B. 74 ? cm<sup>2</sup>

C. 36 ? cm<sup>2</sup>

D. 24 ? cm<sup>2</sup>

1429. The radius of a cylinder is 2 r units and height is 3 r units. Find the curved surface?
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A. 6 ?r<sup>2</sup>sq units

B. 3 ?r<sup>2</sup>sq units

C. 18 ?r<sup>2</sup>sq units

D. 12 ?r2sq units
1433. I. x<sup>2
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A. If x > y

B. If x < y

C. If x = y or the relationship between x and y cannot be established.

D. If x ? y

E. If x ? y

1434. What is the are of an equilateral triangle of side 16 cm?
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A. 128?3 cm2

B. 48?3 cm2

C. 64?3 cm2

D. 9.6?3 cm2

1449. The edges of a cuboid are 4 cm, 5 cm and 6 cm. Find the volume of the cuboid?
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A. 15 cm<sup>3</sup>

B. 120 cm2

C. 120 cm<sup>3</sup>

D. 148 cm<sup>2</sup>