Solve for each of the formulas for the indicated variable:
If the perimeter of a rectangle is 60ft and its length is 18ft, find its width. (see formula in number 1)
The formula for the perimeter of a rectangle is P = 2l + 2w, where P is the perimeter, l is the length, and w is the width.
Given that the perimeter of the rectangle is 60ft and its length is 18ft, we can substitute these values into the formula and solve for the width:
60 = 2(18) + 2w
60 = 36 + 2w
Subtract 36 from both sides:
60 - 36 = 2w
24 = 2w
Divide both sides by 2:
24/2 = w
12 = w
Therefore, the width of the rectangle is 12ft.
The formula for the perimeter of a rectangle is given by:
Perimeter = 2 * (Length + Width)
We are given that the perimeter is 60ft and the length is 18ft. Let's substitute these values into the formula and solve for the width.
60 = 2 * (18 + Width)
Divide both sides of the equation by 2:
30 = 18 + Width
Next, subtract 18 from both sides of the equation:
30 - 18 = Width
Simplifying:
12 = Width
Therefore, the width of the rectangle is 12ft.