Problema Solution
A rectangle is 3 times as long as it is wide. The perimeter is 60 cm. find the dimensions of the rectangle. if necessary, round to the nearest tenth
Answer provided by our tutors
let 'w' represent the width, then '3w' represents the length
perimeter = 2(l+w), where 'l' and 'w' are length and width, respectively
60 = 2(w+3w) = 8w
w = 60/8 = 7.5
3*7.5 = 22.5
the width is 7.5 cm, the length is 22.5 cm