Question

3.

The pair of figures is similar. Find x. Round to the nearest tenth if necessary.
18 ft
0%
8 ft
2 ft
Drawing not to scale
0%
4.5 ft

Answer 1

4.5 ft

Explanation:

Given that the two fugures in the question above are similar, it means they have the same shape, even though they are if different sizes, the ratio of their corresponding sides are proportional. Thus,

18/x = 8/2

Let's solve for x as required.

We have,

18/x = 8/2

=>Cross multiply:

18 × 2 = 8 × x

36 = 8x

=>Divide both sides by 8

36/8 = x

4.5 = x

x = 4.5 ft

The first option is our answer = 4.5 ft