Triangles Area and Perimeter

Area and Perimeter of Rectangles and Triangles

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Perimeter

-The distance around a shape

-To find the perimeter of a rectangle or triangle, add all of the sides together

Multiple Choice

What is the perimeter of this rectangle?

• 22cm

• 36cm

• 26cm

• 13cm

Multiple Choice

What is the perimeter of this triangle?

• 26 m

• 32 m

• 37 m

• 12 m

Area

- the space INSIDE of a shape

- To find the area of a rectangle you multiply length and width (L x W)

-To find the area of a triangle you multiply 1/2 length and width

(1/2 L x W)

Multiple Choice

What is the area of this rectangle?

• 20 cm²

• 80 cm²

• 13 cm²

• 40 cm²

Multiple Choice

What is the area of this triangle?

• 6 cm²

• 12 cm²

• 15 cm²

• 20 cm²

Multiple Choice

Joe wants to build a fence around his yard. His yard is 10 yards wide by 8 yards long. How much fencing will Joe need?

• 36 yards

• 40 yards

• 80 yards

• 18 yards

Multiple Choice

Addy wants to paint her bedroom wall. The wall is 10 ft high by 8 ft wide. What is the area of the wall she wants to paint?

• 18 square feet

• 36 square feet

• 80 square feet

• 100 square feet