Question

If the figures are similar, use a proportion to find the missing side?

Answer 1

Given:

The figure is

Find-:

The value of "x"

Explanation-:

The ratio of sides is

Compared with angle sides is

$\frac{28}{21}=\frac{8}{6}=\frac{30}{x}$

So, the value of "x" is

$\begin{gathered} \frac{8}{6}=\frac{30}{x} \\ \\ x=\frac{30}{8}\times6 \\ \\ x=\frac{30}{4}\times3 \\ \\ x=\frac{15}{2}\times3 \\ \\ x=\frac{45}{2} \\ \\ x=22.5 \end{gathered}$

The value of "x" is 22.5