Answer:
1344 ft²
Explanation:
From the picture we have:
4w = 3l
If w = 12 ft, then
3l = 4(12)
3l = 48 divide both sides by 3
l = 16 ft
The dimensions of rectangular floor are 4w × (l + w).
Substitute the values of w and l:
4w = 4(12) = 48 ft
l + w = 16 + 12 = 28 ft
The formula of an area of a rectangle:
A = width × length
Substitute:
A = (48)(28) = 1344 ft²