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1. Three solid iron cubes of edges 4 cm, 5 cm and 6 cm are melted together to make a new cube. 62 cm^{3} of the melted material is lost due to improper handling. The area (in cm^{2}) of the whole surface of the newly formed cube is

216

294

343

125

2. If the ratio of volumes of two cones is 2 : 3 and the ratio of the radii of their bases is 1 : 2, then the ratio of their heights will be

8 : 3

3 : 4

4:3

3: 8

3. A right pyramid stands on a base 16 cm square and its height is 15 cm. The area (in cm^{2}) of its slant surface is

444

514

544

344

4. If a chord of a circle is equal to the radius of the circle, then the angle subtended by the chord at a point on the minor arc is

30°

150°

60°

120°

5. The length of 40√2 each side of a rhombus is equal to the length of the side of a square whose diagonal is cm. If the lengths of the diagonals of the rhombus are in the ratio 3 : 4, then its area (in cm^{2}) is

1536

1550

1600

1535