Question

I have geometric problems and need help understanding-- triangles. Giving a metal and a fan. questions in the reply!

Answer 1

check them one by one.
for a 3,4,5 triangle
is 3^2 + 4^2 = 5^2 ??

Answer 2

okay thank you~
now for this one, idk why i got 6..

Answer 3

use the pythagorean theorem :
AB^2 + AC^2 = BC^2
so,
AB^2 + 3^2 = 5^2
AB^2 = 5^2 - 3^2
AB^2 = 25 - 9
AB^2 = 16
AB = squareroot(16) = 4

Answer 4

I think it was my calculator. okay lol.
these confuse me a bit

Answer 5

area of Y = 144 + 1225 = ...

Answer 6

okay..
and this?