Question

1. PART A: Determine the missing lengths:

1 = ___
2 = ___

PART B: Find the perimeter:
P = ___

PART C: Find the total area:
A = ___

Answer 1

#1

Divide into two rectangles

`\\ \tt\hookrightarrow`

`\\ \tt\hookrightarrow`

#2

`\\ \tt\hookrightarrow P=14+1+12+3+2+4=36`

#3

`\\ \tt\hookrightarrow A=14(1)+3(2)=14+6=20units^2`

Answer 2

1 = 2 units

2 = 4 units

P = 36 units

A = 20 units²

Explanation:

1. PART A:

Missing length 1 = 14 - 12 = 2 units

Missing length 2 = 1 + 3 = 4 units

PART B

The perimeter is the distance all the way around the outside of a 2D shape. To work out the perimeter, add up the lengths of all the sides

Perimeter = 1 + 12 + 3 + 2 + 4 + 14 = 36 units

PART C

Area of a rectangle = width x height

Separate the shape into 2 rectangles (so draw a line down from the internal corner of the L shape).

Total area = 1 x 14 + 2 x 3 = 14 + 6 = 20 units²