9514 1404 393
Answer:
C. 12 m wide
Step-by-step explanation:
We note that the difference in dimensions is 4 m. This difference will remain the same when both sides are increased by the same amount. If x represents the short side, then the larger area is ...
x(x +4) = 192
x^2 +4x + 4 = 196 . . . . add 4 to complete the square
(x +2)² = 14²
x = 14 -2 = 12 . . . . . . . . positive square root
The new garden will be 12 m wide.
