Answer: Width - 10.5 inches, Length - 21 inches
Explanation:
To find the width of the rectangle, we first need to find the length.
Length = L
Width = 1/2L
Perimeter is when you add up all the sides. So we need to add length to length and width to width.
L + L = 2L
1/2L + 1/2L = L
Now we add up our lenghts and widths:
L + 2L = 63
Combine like terms:
3L = 63
Divide both sides by 3:
L = 21
The length is 21 inches.
Now we plug the length value in to get the width:
1/2(21) = 10.5
The width is 10.5 inches
The dimensions of the rectangle is 10.5 x 21 inches (width x length)
To check this, we just add all the values up:
10.5 + 10.5 + 21 + 21 = 63