Question
The length of a rectangle is three times its width and length of its diagonal is 6√(10)cm.What is the perimeter?
Answers
Reiny
width -- x
length -- 3x
so x^2 + (3x)^2 = (6√10)^2
10x^2 = 360
x^2 = 36
x = 6
finish it up
length -- 3x
so x^2 + (3x)^2 = (6√10)^2
10x^2 = 360
x^2 = 36
x = 6
finish it up