1. Find the perimeter of the following shapes:

Name of shape
Measurements
a. Square
Length 5.5 cm
b. Rectangle
Length 8 mm and width 5 mm
c. Equilateral triangle
Length 8 cm
d. Parallelogram
One side 6 m the another side 9 m
e. Rhombus
Length 5.4 cm

2. Draw a sketch of the following figures with possible measurements:

a. A square of perimeter 24 centimetres.
b. A rectangle with a perimeter of 36 metres and a width of 8 cm.
c. A rhombus with a perimeter of 64 metres.
d. An isosceles triangle with a perimeter of 50 cm.

3. Calculate the perimeter of the following shapes:

 

a

b

c

 

Y7_Perimeter_ex_01.gif

 

Y7_Perimeter_ex_02.gif

Y7_Perimeter_ex_03.gif
d
e
f
Y7_Perimeter_ex_04.gif
Y7_Perimeter_ex_05.gif
Y7_Perimeter_ex_06.gif

 

 

4. Find the perimeter of the following shapes:

a. Lengths in centimetres.

b. Lengths in metres.

c. Lengths in millimetres.

 

Y7_Perimeter_ex_07.gif

 

Y7_Perimeter_ex_08.gif

Y7_Perimeter_ex_09.gif
5. a A basketballer is training by running around a square paddock of length 120 metres. If he runs around 10 times how far does he run in total? Y7_Perimeter_ex_10.gif
b.

A rectangular lawn has a length of 20 metres and a width of 15 metres.
There is a path all the way around the lawn with a width of 1 metre. 
What is the perimeter of:

(i) The lawn?
(ii) The lawn with the path around it?

c. Estimate the perimeter of a normal sized soccer field.