Question

Find the missing side

Answer 1

Answer:

x = 5

Step-by-step explanation:

Since the figures are similar then the ratio of corresponding sides are equal, that is

$\frac{3}{12}$ = $\frac{x}{20}$ ( cross- multiply )

12x = 60 ( divide both sides by 12 )

x = 5

Answer 2

$12 \div 3 = 4$

so

$x = 20 \div 4$

x = 5