WALT: measure area and perimeter of rectangles

Activity 1

1. You will need your maths books to do these questions.

a. Draw a rectangle, 1 cm wide and 9 cm long and label the length and width. Call this rectangle (A). Record the length, width, perimeter, and area of rectangle (a) in the chart below.

b. Draw another rectangle on the grid paper and label it rectangle (B). To make rectangle (B), increase the width of rectangle (A) by 1 cm and decrease the length of rectangle (A) by 1 cm. Record the length, width, perimeter, and area of rectangle (B) in the chart below.

c. Continue increasing 1 cm to the width and decreasing 1 cm from the length. Draw and label each new rectangle and record the length, width, perimeter, and area of each rectangle in the chart below.

Rectangle	Length (cm)	Width (cm)	Perimeter (cm)	Area (cm²)
A	9	1	20	9
B	8	2	20	16
C	7	3	20	21
D	6	4	20	24
E	5	5	20	25
F	4	6	20	24
G	3	7	20	21
H	2	8	20	16
I	1	9	20	9

1. Look at the chart. What do you notice about length? it goes down every different one

2. What do you notice about width?  it goes up every different one

3. What do you notice about perimeter? they are all 20cm

4. Which rectangle has the largest area?E