Problema Solution
A picture is mounted onto a piece of cardboard such that it has a 5 centimeter border around it. The picture measures 10 centimeters by 8 centimeters. What will the perimeter of the cardboard be if the border is reduced by 3 centimeters on all sides?
Answer provided by our tutors
Let 'P' represent the perimeter, 'l' represent the length and 'w' represent the width.
P=2*l + 2*w
The length is 10 centimeters plus 5-3.
The width is 8 centimeters plus 5-3.
P=2(10+(5-3))+2(8+(5-3))
P=44
The perimeter of the reduced cardboard would be 44 centimeters.