# Revisiting area: Compound shapes

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## Lesson details

### Key learning points

- In this lesson, we will be working out the area of compound shapes that can be deconstructed into triangles and quadrilaterals.

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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 5 Questions

Q1.

How do you work out the area of a triangle?

b + h x 2

b x h

Q2.

How do you work out the area of a rectangle?

(b x h)/2

b + h x 2

Q3.

What is the area of a rectangle with a base of 6cm and a height of 5cm?

11

22

Q4.

What is the area of a triangle with a height of 6cm and a base of 10cm

32cm²

60cm²

Q5.

A rectangle with a height of 3cm and a base of 4cm has the same area as a triangle with a height of 3cm and a base of _________.

10cm

4cm

6cm

### 5 Questions

Q1.

How do you work out the area of a triangle?

b + h x 2

b x h

Q2.

How do you work out the area of a rectangle?

(b x h)/2

b + h x 2

Q3.

A rectangle with a height of 3cm and a base of 4cm has the same area as a triangle with a height of 3cm and a base of _________.

10cm

4cm

6cm

Q4.

A compound shape is _____________________.

a shape with 5 sides

a shape with more than 6 sides

Q5.

A trapezium has _______________.

no parallel sides

two pairs of parallel sides