Answer:
L1=78
W1=46
L2=78+4=82
W2=46+4=50
Area=L2×W2-L1×W1
82×50-78×46
Ans- 512ft^2
Step-by-step explanation:
64
3n÷16=12
3n=12×16
3n=192
3n/3=192/3
n=64