3W = L
2W + 2L = 256
Substitute 3W for L in second equation and solve for W. Insert that value into the first equation and solve for L. Check by inserting both values into the second equation.
L * W = ?
The perimeter of rectangle ABCD is 256 inches. Its length is 3 times as long as its width. Find the area of triangle ABC
2 answers
54
3 answers