Grade 8 Area and Perimeter

Area

100

l = 4 cm

w = 8 cm

32 square cm

200

l = 8m

w = 7m

A = 56 square m

300

Find the area of a square with a side length of 5 cm.

A = 25 square cm

400

Find the area of a triangle with 

base = 12mm

height = 7mm

42mm²

500

Find the area of a parallelogram with

base = 12cm

height = 7cm

84cm²

Perimeter

100

l = 1 cm

w = 2 cm

P = 6 cm

200

l = 6 mm

w = 2 mm

P = 16 mm

300

Find the perimeter of a square with 7 centimetre sides.

P = 28 cm

400

Find the perimeter of a triangle with

side length 1: 7m

side length 2: 8m

side length 3: 13m

28m

500

Find the perimeter of a 5-pointed star with each side being 7cm

70cm

Area AND Perimeter

100

Find the area and perimeter of a square with 12 metre sides.

A = 144 square m

P = 48 m

200

Find the area and perimeter of a rectangle if the length is 8m and the width is 14m.

A = 112 square m

P = 44m

300

Find the area and perimeter of a square if the sides are 18m.

A = 324 square m

P = 72m

400

Find the area and perimeter of a triangle if

base/side lengths 1 & 2 = 8mm

height = 4mm

side length 3 = 5mm

Area: 16mm²

Perimeter: 21mm

500

Find the area and perimeter of a parallelogram if 

base = 12m

height = 4m

side length = 6m

Area: 48m²

Perimeter: 36m

Area and Perimeter

100

How do you find the perimeter?

Add all the sides.

P = l + w+ l + w

P = 2l + 2w

200

How do you find the area?

Multiply length times width.

A = l x w

300

The perimeter of a square is 48m.

What do the sides measure?

All 4 sides measure 12m.

400

The area of a rectangle is 28m.

The length is 7 Metres.

What is the width?

The width is 4m.

500

The perimeter of a rectangle is 36m.

The length is 10m.

What is the width?

The width is 8m.

Quick maths

100

220 + 430 = ?

650

200

500 - 177 = ?

323

300

6 x 4 = ?

24

400

56 divided by 7 = ?

8

500

10 x 7 - 3 + 18 divided by 3 = ?

73