The area of triangle A B C is twelve square centimeters. Each of the dimensions of triangle D E F is 3 times the dimension of triangle A B C . What is the area of triangle D E F ?

Question

kinggeorge · Answer

I'm assuming by dimensions you mean side lengths correct?

anonymous · Answer

Right

kinggeorge · Answer

I'm pretty sure that the area would then be 9 times your original amount, so $9*12=108$cm$^2$

anonymous · Answer

that is what i came up with but i wasnt sure if it was right

kinggeorge · Answer

Using a quick check with Heron's formula, if you increase the side lengths by a factor of $k$, then the area increases by $k^2$.

anonymous · Answer

thank u for explaining it

kinggeorge · Answer

You're welcome.