Answer:
Step-by-step explanation:
A = L x W
168 = L x W
But the length is 5 more than twice the width
L =5 + 2W
Substitute to the first equation:
168 = (5 + 2W)W
168 = 5W + 2W^2
2W^2 + 5W - 168 = 0
W = 8 m
Therefore the length is L = 5 + 2W = 5 + 2(8) = 21
The dimension is therefore
8m by 21 m
