Answer:
L=96m
W=57cm
Explanation:
General formula of the area of rectangle would be
Length * Width = Area
Length * 84 = 8064
By dividing both sides of equation by 84
Length = 8064/84 = 96m
General formula of the perimeter of rectangle would be
Perimeter = 2(Length + Width)
288 = 2(87 + Width)
By dividing both sides of equation by 2
144=87+Width
By substracting 87 from both sides of equation
144-87=Width
Width = 57cm