Perimeter & Area of Triangles

What formula do you use to find area?

• add up all the sides

• length x width

• length x width x height

What formula do you use to find perimeter?

• add up all the sides

• length x width

• length x width x height

What is the area of the rectangle shown?

• 84 square feet

• 19 square feet

• 5 square feet

What is the perimeter of the rectangle shown?

• 19 cm

• 38 cm

• 84 cm

How do you find the area of a triangle?

• base x height

• take half of the base times the height

• add up all of the sides

Find the area of the triangle.

• 10 cm²

• 24 cm²

• 12 cm²

Find the area of the triangle.

• 30 m²

• 60 m²

• 16 m

• 30 m

Find the area of the triangle.

• 96 in²

• 48 in²

• 20 in²

Find the perimeter of this triangle.

• 20 cm
• 35 cm
• 40 cm
• 12.5 cm

Find the area:

• 40 yd
• 40 yd²
• 80 yd²
• 18 yd²