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
A figure is given belowradius OA=3 cm. Calculate the area of the shaped region.
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
If each of the dimensions of a rectangle is increased 100%, the area is increased:
150%
200%
300%
500%
Right circular cylinder P has a radius of 3 cm and a height of 4 cm. If the volume of P is equal to the volume of right circular cylinder Q, which has a radius of 2 cm, what is the height of Q?
7 cm
9 cm
17 cm
24 cm
The area of a rectangle with width 3 cm and length 8 cm is equal to the area of a triangle with base 6 cm and height of-
5 cm
8 cm
11 cm
18 cm
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
A liquid that fills a rectangular container whose dimensions are 2 cm x 10 cm x 20 cm is poured into a cylindrical container whose base radius is 5 cm. What height (in cm) will the surface of the liquid reach in the cylindrical container?
32
16
The length of a rectangle with area 12 cm2 is three times the rectangle's width. What is the perimeter of the rectangle?
15 cm
16 cm
If a circle's circumference is 10 centimetres long. What is the area of the circle, in square centimetres?
14
12
25
