The area ratio between 2 similar triangles is 225/81. Find the perimeter ratio of these triangles.
a) 3/2
b) 225/81
c) 15/9
5 answers
the square root of the area ratio
how do I find the square root of the area ratio?
The areas of two similar figures are proportional to the square of their corresponding sides
so 225 : 81 = side1^2 : side2^2
then √225 : √81 = side1 : side2
side1 : side2 = 15 : 8
so 225 : 81 = side1^2 : side2^2
then √225 : √81 = side1 : side2
side1 : side2 = 15 : 8
you mean 15 : 9?
yes, of course, hit the wrong key
1 answer