Question

Find the perimeter.

Write your answer as a fraction or as a whole or mixed number,
2
mm
w
1
mm
1
Alw
mm
m
2
HL
mm
millimeters

Answer 1

2 1/5

2 X 5 + 1 = 11/5

11/5 X 2/1 = 22/5

1 3/4

1 X 4 + 3 = 7/4

7/4 X 2/1 = 14/4

22/5 + 14/4

5 X 4 = 20

4 X 22 = 88

5 X 14 = 70

88/20 + 70/20 = 158/20

20 goes into 158 7 times with 18 left over

7 18/20 simplified = 7 9/10

Answer 2

The Perimeter of the rectangle is 7 19/20 mm

The Perimeter of a rectangle can be calculated using the relation;

• Perimeter = 2(length + width)

Using the length and width values given

Perimeter = 2(1 3/4 + 2 1/5)

Perimeter = 2(3 19/20)

Perimeter = 6 38/20 ≈ 7 19/20

Therefore, the Perimeter of the rectangle is 7 19/20 mm