height of goalpost = x
width of goalpost = 3x
2(x+3x) = 21 1/3
8x = 64/3
x = 8/3
The distance between goalpost, BC, is three times the distance from the top of the goalpost to the bottom. If the perimeter of ABCD is 21 1/3 yards, what is the length of BC
2 answers
65