The total distance around the outside of a two-dimensional shape, found by adding all its side lengths.
If an ant walked around the edge of a rectangle, perimeter is how far it walked.
Showing a random 20 of 50 problems.
Example 1
easy
Find the perimeter of a rectangle with length 9 in and width 4 in.Find the perimeter.
Example 2
easy
Find the perimeter of an equilateral triangle with side length 12 in.Find the perimeter.
Example 3
challenge
A rectangle is cut by a straight line from one side to a non-adjacent side, dividing it into two pieces. The original rectangle has perimeter 30 and the cut has length 7. What is the sum of the perimeters of the two pieces?
Example 4
medium
A rectangle has perimeter 50 and length 5 more than width. Find length and width.
Example 5
easy
A regular pentagon has each side measuring 4 cm. Find its perimeter.Find the perimeter.
Example 6
easy
Find the perimeter of a square with side length 6 cm.Find the perimeter.
Example 7
easy
A triangle has sides 6, 8, and 11. Its perimeter is ____.
Example 8
easy
Find the perimeter of a rectangle with length 7 m and width 3 m.Find the perimeter.
Example 9
easy
A square has perimeter 32 cm. Find the side length.Perimeter = 32 cm. Find each side length.
Example 10
medium
A rectangular swimming pool measures 25 m by 12 m. How many meters of fencing are needed to enclose it?
Example 11
challenge
A regular hexagon and a square have equal perimeters. The hexagon's side is 6 cm. Find the square's side.
Example 12
hard
An L-shape is formed by cutting a 3×4 rectangle from the corner of a 10×8 rectangle. Find the perimeter of the L-shape.
Example 13
medium
A garden is a rectangle 20 m long and 12 m wide. Fencing costs $8 per meter. How much does it cost to fence the garden?Fencing costs $8/m. Find the total cost to fence the garden.
Example 14
medium
An isosceles triangle has perimeter 34 cm. The base is 10 cm. Find the length of each equal side.
Example 15
medium
A regular hexagon has perimeter 48 in. Find each side.
Example 16
medium
The length of a rectangle is 3 m more than twice its width. If its perimeter is 42 m, find the length and width.
Example 17
medium
A regular octagon has perimeter 56 cm. Find each side.
Example 18
challenge
Two squares with side lengths 4 and 6 share one common side (the smaller's side lies along the larger's side). Find the perimeter of the resulting composite shape.
Example 19
medium
A garden is a regular octagon, each side 3.5 m. Find the perimeter.
Example 20
easy
Find the perimeter of a square with side length 9 m.