Perimeter of a rectangle

The distance around the shape.

🔍 Step 1 · Understand

First, look at a worked example

A rectangle is 10 cm long and 8 cm wide. What is its perimeter, in cm?

💡 The tip : The perimeter is the distance around: length + width + length + width.

🤔 Find the answer in your head, then open the solution.

👀 See the solution

Answer: 36

2 × (10 + 8) = 2 × 18 = 36 cm.

10 questions. Take your time, and ask for a hint if you get stuck.