Alexander B. answered • 05/16/18

Advanced Math and Science Tutoring and Test Prep online (SAT, ACT)

First, find the Length by solving the quadratic equation:

L(L-30)=1000

L

^{2}-30L-1000=0The only positive solution is L = 50m. Therefore, the Width (W) = 20m and Perimeter of the yard is 2(50+20)=140m