find the width of a rectangle with a perimeter of 90 and a length of 15

Answer 1

To find the width of a rectangle, we can use the formula for the perimeter of a rectangle:

Perimeter = 2 * (Length + Width).

In this case, we know the perimeter is 90 and the length is 15.

So, we can substitute these values into the formula and solve for the width:

90 = 2 * (15 + Width).

Dividing both sides of the equation by 2:

45 = 15 + Width.

Subtracting 15 from both sides of the equation:

45 - 15 = Width.

30 = Width.

Therefore, the width of the rectangle is 30.