Finding missing measure of similar triangle .

Question

1st triangle has
leg AB 3cm leg bc 9cm hypotenuse ac ?
2nd triangle has
Leg DE ? Hypotenuse EF 12cm and Leg DF is 10cm

What is AC?What is DE

Answer 1

in ABC, AC = √(3^2+9^2) = 3√10
DE = √(12^2-10^2) = 2√11

But the similarity is bogus, since 3/9 ≠ 22√11/10

You need to fix this up