Verified Answer :

Answer:

The length of rectangle =18 m.

Step-by-step explanation:

Suppose of length of rectangle=x

Width of rectangle =\(\frac{2}{3}x\)

Area of rectangle =\(216 m^2\)

We have to find the length of rectangle .

Area of rectangle =\(length\times breadth\)

Substitute the values in the given formula

\(216=x\times \frac{2}{3}x\)

\(216=\frac{2}{3}x^2\)

\(2x^2=216\times 3\) By multiplication property of equality

\(x^2=\frac{216\times 3}{2}\) ( by division property of equality )

\(x=\sqrt{324}=18\)

Substitute the value then we get

Width of rectangle =\(\frac{2}{3}\times 18=12 m\)

Hence, the length of rectangle =18 m.