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- Sum of length, width and depth of a cuboid is ‘m’ and its diagonal is ‘n’. Its surface area?
- M^2
- M^2-n^2
- N^2
- M^2+n^2

- The areas of two spheres are in the ratio of their volumes is?
- 1:27
- 1:81
- 1:729
- 1:3

- A cone a hemisphere and a cylinder stand on equal base and have the same heigt. Find the ratio of their volumes?
- 4:3:2
- 2:3:4
- 1:2:3
- 3:2:1

- A circular wire of radius 21 cm is cut and bent in the form of a rectangle whose sides are in the rario 8:3, find the sides of the rectangle?
- 48,18
- 16,24
- 16,624,9

- Two cubes each of edge 9 cm are joined to form a cuboid. What is the surface area of the cuboid?
- 972
- 810
- 910
- 820

- Each of the radius and the height of acome is increase by 20%. Thn find the % increase in the volume?
- 80%
- 40%
- 32.4%
- 72.8%

- The radius and height of a cylinder are incrased by 10% and 20% rpectively. Find the percent increase in its curved surface area?
- 35%
- 30%
- 32%
- none

- Each of the radius and the height of a right cylinder is both increased by 10%. Find the % by whch the volume increase?
- 32.5%
- 33.1%
- 30%
- 31.2%

- The radius of a right circular cylinder is decreaed by 20% and its height is increased by 10% what is the percentage change in is volume?
- 70.4% increase
- 70.4% decrease
- 29.6% increase
- 29.6% decrease

- The radius of a right circular cylinder and height both is decreased by 10% then find the percentage increase in its volume?
- 31.2%
- 28.2%
- 27.1%
- 33.7%

**KEY:::1(b) 2(a) 3(c) 4(a) 5(b) 6(d) 7(c) 8(b) 9(c) 10(c)**

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