Problema Solution
The viewing window of a calculator has a perimeter of 20 centimeters and is 6 centimeters longer than it is wide. Find the dimensions of the window.
Answer provided by our tutors
Let
width = x
length = x + 6 (6 cm longer than width)
perimeter = 20 cm
Since perimeter = 2*width + 2*length we have:
2x + 2(x + 6) = 20
........
click here to see the equation solved for x
........
x = 2
x + 6 = 2 + 6 = 8
The dimensions of the calculator are: the width is 2 cm and the length is 8 cm.