Perimeter
Area
Ratio
Proportion
100
What is the perimeter of the rectangle?
24
100
What is the area of this rectangle?
24
100
In the following diagram
what is the ratio of orange squares to white squares?
5 : 11
200
What is the perimeter of the cross?
The cross has 12 sides altogether, each of length 10 units.
= 12 × 10
= 120 units
200
What is the area of this rectangle?
17.6
200
A class of 32 students has 12 girls. What is the ratio of girls to boys?
3 : 5
300
What is the perimeter of this shape?
(The grid squares are "1" on each side.)
26
300
Estimate the area of the heptagon by counting squares.
Which of the following gives the best estimate?
approximately ~30
300
A recipe for pastry has flour, butter and water mixed in the ratio 24 : 8 : 3
If Milan follows the recipe and uses 3 cups of flour, how many cups of butter should she use?
1 Cup
300
What is the ratio of yellow triangles to all triangles?
There are 10 yellow triangles and 25 triangles altogether.
So the ratio of yellow triangles to all triangles is 10 : 25 which is equal to 2 : 5
400
The diagram shows a rectangle and a square.
If they have equal perimeters, what is the length of one side of the square?
5
400
Estimate the area of the circle by counting squares.
Approximately ~39
400
∠AOC is a right angle and the ratio ∠AOB : ∠BOC = 2 : 3
What is the size of angle BOC?
540
400
The two glasses are in proportion.
What is the width of the larger glass?
3 inches
500
What is the perimeter of this shape?
36
500
If the area of one triangle of the grid is 3 units2, what is the total area of the hexagon?
198 unit2
The hexagon is made up of 66 triangles:
66 × 3 = 198
500
A real horse is 1.8 m high. A statue of the horse is 3 m high. What is the ratio of the height of the horse to the height of the statue?
3 : 5
500
The two triangles are in proportion - they are similar triangles.
What is the value of b?
=2.25
The proportions are equal, so