Question

If a and b are two sides of a right triangle, find the length of the hypotenuse, c.

a=8, b=4, c=?

Answer 1

do u do 8 * 8 and 4 * 4 then what

Answer 2

\[a^2+b^2=c^2\]
\[8^2+4^2=c^2\]
\[64+16=c^2\] etc

Answer 3

so i add those then i square that ?

Answer 4

add them then take the square root

Answer 5

so its 80 and then square root that

Answer 6

yes \(c=\sqrt{80}\)

Answer 7

and since \(80=16\times 5\) you can write \(c=4\sqrt{5}\)

Answer 8

i got it :)