the perimeter of a rectangular painting is 260 cm If the length of the painting is 78 cm what is its width
2(w+78) = 260
To find the width of the rectangular painting, we can use the formula for the perimeter of a rectangle:
Perimeter = 2 × (length + width)
Given that the perimeter is 260 cm and the length is 78 cm, we can substitute these values into the formula and solve for the width.
260 = 2 × (78 + width)
Now, let's simplify the equation and solve for the width:
260 = 156 + 2 × width
Subtracting 156 from both sides:
260 - 156 = 2 × width
104 = 2 × width
Dividing both sides by 2:
104 / 2 = width
Therefore, the width of the rectangular painting is 52 cm.