Find the values of x and y when the smaller triangle has an area of 42 cm?cm.The value of x is cm and the value of y is a(Type exact answers, using radicals as needed. Rationalize all denominators.)

Find the values of x and y when the smaller triangle has an area of 42 cmcmThe value of x is cm and the value of y is aType exact answers using radicals as need class=


Answer :

Given two similar triangles

The corresponding sides are proportions

So,

[tex]\frac{x}{y}=\frac{24}{42}=\frac{4}{7}[/tex]

So, the relation between x and y will be:

[tex]x=\frac{4}{7}y[/tex]

The area of the smaller triangle = 42 cm^2

So, area =

[tex]\frac{1}{2}x\cdot y=42[/tex]

Substitute with x into the equation of the area to find the value of y

[tex]\begin{gathered} \frac{1}{2}\cdot\frac{4}{7}y\cdot y=42 \\ \\ y^2=\frac{42\cdot2\cdot7}{4}=\frac{588}{4}=147 \\ y=\sqrt[]{147} \end{gathered}[/tex]

Substitute with y into x

[tex]x=\frac{4}{7}\cdot\sqrt[]{147}=\frac{4\sqrt[]{147}}{7}[/tex]

So, the answer will be:

[tex]\begin{gathered} x=\frac{4\sqrt[]{147}}{7} \\ \\ y=\sqrt[]{147} \end{gathered}[/tex]