Three congruent squares are arranged in a row., If the perimeter of ABCD is 80 cm, the area of ABCD is-
280 cm2
312 cm2
540 cm2
300 cm2
If the length and the width of a rectangle are both tripled, the ratio of the area of the original rectangle to the area of the enlarge rectangle is
1:5
1:7
1:9
9:1
A piece of wire is shaped to enclose a square, whose area is 121 square cm. It is then reshaped to enclose a rectangle whose length is 13 cm. The area of the rectangle, (in square cm) is-
81 cm2
95 cm2
117 cm2
178 cm2
Two cardboard boxes have equal volume. The dimensions of one box are 6 cm x 8 cm x 10 cm. If the length of the other box is 4 cm and the width is 6 cm. What is the height (in cm) of the second box?
20
30
54
65
The radius of a circle that has a circumference equal to the perimeter of a hexagon whose sides are each 22 cm, long is closest in length to which of the following?
15 cm
17 cm
21 cm
32 cm
If cylinder A has a height twice that of cylinder B and a radius half that of cylinder B, what is the ratio between the volume of cylinder A and the volume of cylinder B?
1:6
2:1
1:2
4:1
The hypotenuse of a right triangle is 13 cm and one side is 12 cm. Then the length of the other side of the triangle is-
3 cm
5 cm
24 cm
40 cm
What is the area of the rectangle in sq. units in the figure?
8
12
14
21
If a circle's circumference is 10 centimetres long. What is the area of the circle, in square centimetres?
32
25
A cube has an edge that is 4 cm long. If the edge is increased by 25%, then the volume is increased by approximatley-
42%
64%
81%
95%
