Perimeter of Geometric Figures

Determine the perimeter of a triangle with side lengths 4 units, 7 units, and 9 units.

• 15 units

• 12 units

• 25 units

• 20 units

Find the perimeter of a triangle with side lengths 6 units, 8 units, and 10 units.

• 20 units

• 15 units

• 24 units

• 30 units

Find the perimeter of a regular hexagon with each side measuring 5 units.

• 35 units

• 25 units

• 30 units

• 20 units

Calculate the perimeter of a regular octagon with each side measuring 7 units.

• 63 units

• 42 units

• 56 units

• 35 units

Sophie was building a fence around her flower bed. The width must be twice the length to fit her backyard. She only has 72 feet of fencing. What is the maximum width she can build?

• 18 feet

• 12 feet

• 24 feet

• 36 feet

Alfred built a raised flower bed using 9 railroad ties of equal length. The railroad ties were each 8 feet long. Which expression has a value equal to the perimeter of the flower bed?

The length of a rectangle is 5 cm greater than its' width. The perimeter of the rectangle is 58 cm. Write an equation in terms of width (variable "a") for perimeter of the rectangle (use "a" to represent width)

Mathematical Equivalence

ON

• 4 cm

• 6 cm

• 8 cm

• 12.72 cm

Suppose the dimensions of a triangle with a perimeter of 18 units are doubled. Find the perimeter of the new triangle.

• 18

• 36

• 72

• 288