A right triangle has an area of 13^2. The dimensions of the triangle are increased by a scale factor of three. What is the area of the new triangle?

a. 39^2
b. 169^2
c. 117^2
d. 142^2
i think the answer is A but i am not sure! any help is appreciated

6 answers

if the dimensions increase by a factor of 3, the area increases by a factor of 3^2, so A is correct.

13^2 * 3^2 = (13*3)^2 = 39^2
Steve, you're wrong. It's C, I did the test and it was c
Hammy
I know this is 2 years later and about to be three but you do know that the test changes everyday and that post was a month before yours lollll
smh is right....
No, smh is wrong. It doesn’t change every day not even every month it stays the same, not forever. But, for a long time for example I‘ve seen a test stay the same for almost a decade now. ~you have got to be kidding me
smh
just took the test and the tests don't change that often.