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Q 1. The area of a square whose perimeter is 16cm is
64 cm2
16 cm2
32 cm2
128 cm2
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Q 2. A rectangular field has dimensions of 72m and 65m. The area of the field is
4680 m2
4400 m2
4880 m2
4360 m2
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Q 3. The area of a right angled triangle, whose base is 8cm and hypotenuse is 10cm, is :
40 cm2
48 cm2
24 cm2
80 cm2
Other side is 6cms using pythagorean theorem. Hence Area = 1/2 * Base * Height =1/2 * 8 * 6 = 24cm^2
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Q 4. Two parallel sides of a trapezium are of lengths 16 cm and 10cm and the distance between them is 8 cm. Area of the trapezium is
104 cm2
208 cm2
52 cm2
1280 cm2
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Q 5. Two parallel sides of a trapezium are of lengths a cm and b cm and distance between them is d cm. The area of the trapezium is given by :
(a + b) {tex}\times{/tex} d cm2
{tex}\frac{1}{2}{/tex}(a + b) {tex}\times{/tex} d cm2
2(a + b) {tex}\times{/tex} d cm2
none of these
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Q 6. The area of a trapezium of height 4 cm is 16 cm2. If one of the parallel sides is 4 cm, the other side will be
8 cm
2 cm
3cm
4 cm
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Q 7. In a trapezium, sum of two parallel sides is 20 cm and distance between them is 5cm. Its area is:
100 cm2
50 cm2
25 cm2
200 cm2
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Q 8. The volume of a cube whose edge is 5a is :
25 a3
125 a2
150 a2
125 a3
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Q 9. The volume of a cuboid whose length, breadth and height are 2a, 3b and 4c is :
6 abc
24 abc
48 abc
none of these
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Q 10. The volume of a cuboid whose length, breadth and height are in the ratio of 3 : 1 : 2 is
8 {tex}\times{/tex} breadth3
8 {tex}\times{/tex} length3
6 {tex}\times{/tex} breadth3
length {tex}\times{/tex} breadth
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Q 11. The volume of a water tank is 3 m3. Its capacity in litres is :
30
300
3000
none of these
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Q 12. The capacity of a cubical mug is 1 lit. The length of its edge is :
1 cm
10 cm
1 m
none of these
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Q 13. The surface area of an open box whose length, breadth and height are l, b and h respectively, is :
2(lb + bh + hl)
2(lb + bh) + hl
2(bh + hl) + lb
2(lb + hl) + bh
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Q 14. Two cubes each of edge 5 cm are joined end to end. The surface area of the resulting cuboid is:
125 cm2
240 cm2
250 cm2
500 cm2
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Q 15. If the ratio of the surface area of two cubes is 1 : 9, then the ratio of their volumes will be
1 : 9
1 : 27
1 : 36
1 : 18
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Q 16. Surface area of a cube is 150m2. The length of its length is
5m
10m
15m
6m
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Q 17. The total surface area of a cylinder whose height is twice the radius, 'r' is
8{tex}\pi^2{/tex}
36{tex}\pi^2 r{/tex}
6{tex}\pi r^2{/tex}
81{tex}r^2{/tex}
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Q 18. Radius of a cylinder is x cm and its height is 2x cm. Its volume is :
{tex}\pi{/tex}x3cm3
2{tex}\pi{/tex}x3cm3
3{tex}\pi{/tex}x3cm3
4{tex}\pi{/tex}x3cm3
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Q 19. The ratio of radii of two cylinders is 1 : 2. If the ratio of their heights is 2 : 1, then the ratio of their volume will be
1 : 2
1 : 4
2 : 1
4 : 1
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Q 20. If the height of a cylinder is equal to the radius of its base, then the curved surface area of the cylinder is:
2{tex}\pi{/tex}r
2{tex}\pi{/tex}r3
{tex}\pi{/tex}r2
2{tex}\pi{/tex}r2
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Q 21. If the base of a triangle is doubled and height is halved, its area will be
Doubled
Halved
One-fourth
Same
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Q 22. The area of square, whose diagonal is 12 cm, will be
144 cm2
72 cm2
36 cm2
48 cm2
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Q 23. The ratio of the areas of a square and a rectangle of length 4 cm and width 3 cm is 4 : 3. The side of the square will be
4 cm
3 cm
12 cm
9 cm
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Q 24. The adjacent sides of a parallelogram are 4 cm and 12 cm. The distance between the longer sides is 6 cm. The distance between the shorter sides will be
2 cm
14 cm
18 cm
8 cm
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Q 25. The diagonals of a rhombus are 9 cm and 6 cm. Its area will be
54 cm2
27 cm2
108 cm2
216 cm2