Will mark ! 18 points for right answer!

I think it should be 1.7?

a^2 + b^2 = c^2

c^2 = 16

Square root of 16 is 4.

1 + 3 = 4

Square root of 1 is 1 and square root of 3 is given, which is 1.7.

An equilateral has two right triangles out together, so basically that would be a rectangle.

1 x 1.7 = 1.7

Not sure lol I just commented so the other person can get brainliest.