Answer:
Step-by-step explanation:
let width=x
length=3x
area=x*3x=3x^2
so 3x^2=10
[tex]x=\sqrt{\frac{10}{3} } \\width=\sqrt{\frac{10}{3} } \\length=3*\sqrt{\frac{10}{3} } =\sqrt{30}[/tex]
