Answer:
L = 22 ft
Step-by-step explanation:
Let L and W represent the length and width respectively.
L = 4W, or W = L/4. Use W = L/4 because we want to solve for W, not for L.
Area of a rectangle: A = L · W
Here, A = L · L/4 = 121 ft²
Mult. both terms by 4 removes the fraction:
L² = 484
Finding the square root of this result: L = 22
The length of the rect. is 22 ft.
Answer:
22
Step-by-step explanation:
Width - x
Length - 4x
Area=x*4x=4x²
Area=121
4x²=121
x²=121/4
x=√(121/4)=√(11²/2²)=11/2 - width
Length = 4x=4*(11/2)=22
