Perimeter word problems

One side of a square measures 15cm. What is the perimeter of the square?

15 × 4 = 60centimeters. The perimeter of the square is 60centimeters.

Each sides of a triangle measures 12cm. What is the perimeter of the triangle?

12 × 3 = 36. The perimeter of the triangle is 36cm.

A rectangular swimming pool has a length of 20 meters and a width of 7 meters. What is the perimeter of the pool?

20 + 20 + 7 +7 = 54 meters. The perimeter of the pool is 54 meters.

A hexagon has six sides.The perimeter of a hexagon measures 24cm. What is the length of each side?

24 ÷ 6 = 4 The length of each side is 4cm.

The width of a square is 12cm. Ben measured the perimeter and said that it was 24cm. Is Ben correct? Explain your thinking

A square has 4 equal sides. So, the length and width have the same measurements in a square. Ben has added only two sides of the square, thus is not correct. To get the correct perimeter, Ben will have to add all the sides of the square. 12+ 12+ 12+ 12 = 48 cms.

A regular pentagon has 5 equal sides. The perimeter of a regular pentagon measures 40cm. What is the length of each side?

If 5 sides measure 40cm, what is the length of one side? 40÷ 5 = 8. The length of each side is 8cm.

The length of a rectangle is 10cm and the width is 5cm. What is the perimeter of the rectangle?

The lengths of the rectangle are equal and so are its width. Thus, to find the perimeter, you will have to add the length twice and the width twice. 10 + 10 + 5 + 5 = 3cm. The perimeter is 30cm.

Lisa cuts a 40cm length of ribbon. She glues it around the perimeter of two identical squares. Draw a diagram of the two squares and label the length of each side.

This is fun! Lisa used 40cm ribbon for 2 identical squares. So, for one square she used 20cm. A sides of a square are equal. so, 20 ÷ 4 =5. Thus, you will have to draw two identical squares and label each side as 5 cms.