GCSE Maths Practice: perimeter-and-area

Question 2 of 10

This question emphasizes calculating perimeter of compound shapes.

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\( \begin{array}{l}\text{Which statements are true about finding perimeter of compound shapes?}\end{array} \)

Select all correct options:

\( \text{You add the lengths of all outer sides} \) \( \text{You find the area first} \) \( \text{Curved edges must be included} \) \( \text{Perimeter only applies to flat shapes} \)

Sum all outer edges, straight and curved. Do not confuse with area.

When finding the perimeter of a compound shape, include all outer sides, whether straight or curved. For example, a rectangle with a semicircle attached: add rectangle sides plus semicircle curved edge. Do not confuse perimeter with area; perimeter measures length around the shape. Understanding this principle is important for fencing, borders, or construction designs. Practice with different compound shapes to ensure all edges are counted and units are consistent.