Question

How long is the diagonal of a 12 mm-by-16 mm face of a rectangular prism?

Answer 1

use Pythagoras' theorem

Answer 2

dhat beat me to it :)

Answer 3

Ahaha :D

Answer 4

So does that mean it would be 800?

Answer 5

:D

um, no

Answer 6

sqrt(12^2 + 16^2)

Answer 7

But 12 to the second power is 144

Answer 8

you forgot to take the sqrt.

Answer 9

And when add to 16 to the second power i get 256

Answer 10

144
256
----
400 sqrt(400) = 20

Answer 11

Then I add it and get 400

Answer 12

And I square root it to get 800?

Answer 13

800*800 = 400???

Answer 14

no no.. sorry. it is the sqrt of 400

Answer 15

type in sqrt(400) in google and press enter

Answer 16

Oh my bad! I multiplied it again by 400. I was thinking of exponents aha but thank you

Answer 17

you are welcome.