Are monsters good at maths?

Not unless you Count Dracula!

The type of questions involving** area scale factor **can appear monstrous.

Honestly, they're not!

4 cm 8 cm

Area 16 cm² **What is the area of this square?**

1. Find the **scale factor of the enlargement:** 8 ÷ 4 = **scale factor 2** This does **not **mean that the area is twice as big!!

2. Take the scale factor and** square **it to find the **area** scale factor: **2² = 4**

3. The area of the larger square is 4 times as big: **16 x 4 = 64 cm²**

6 cm 18 cm

** Area = 12 cm² What is the area of this rectangle?**

1. Find the scale factor of the enlargement: **18 ÷ 6 = scale factor 3 **This does **not** mean that the area is 3 times as large.

2. Take the scale factor and square it: **3² = 9**

3. The area of the larger rectangle is 9 times as big: **12 x 9 = 108 cm² **

Can you spot the pattern when you see it in the form of a table?

Study the table below and then move on to the questions.

Scale factor 2 | Area scale factor 2² | 4 times as big |

Scale factor 3 | Area scale factor 3² | 9 times as big |

Scale factor 4 | Area scale factor 4² | 16 times as big |

Scale factor 5 | Area scale factor 5² | 25 times as big |