Question

Find the missing part



l = 8, w = 4, h = 2

Find the diagonal (d) of the base

Answer 1

Maybe a drawing of the base will help:

D is the one that we are looking for, right?

Answer 2

yea

Answer 3

And there we can use the Pythagorean theorem.
Remember it?

Answer 4

yea
a[^{2}\]+b\[^{b}\]=c\[^{2}\]

Answer 5

Nice! And what do we have to plug in for a and b in this case?

Answer 6

d and l

Answer 7

a=l, and b=w in this case, so:
\[d^2=l^2+w^2\]
How do we continue?

Answer 8

uhh not very good with pyth theorem. could u assist

Answer 9

Just plug the values of l and w and solve for d.
Tell me if you don't feel sure.

Answer 10

\[d^2=8^4+4^2\]

Answer 11

d=8.94427191

Answer 12

Excellent!

Answer 13

yay. but can u put that in radical form

Answer 14

Sure! A sec please

Answer 15

\[d=\sqrt{8^2+4^2}=\sqrt{80}=\sqrt{16*5}\]
What else can we do there?

Answer 16

hint: sqrt{16}=4

Answer 17

@rickol Are you there?

Answer 18

yea........................ i don't know

Answer 19

d=4*sqrt{5}

Answer 20

\[d=4*\sqrt{5}\]

Answer 21

Makes sense?

Answer 22

Sorry, but I have to go. I hope it helps.
See you! Bye! ;)
\[d=4\sqrt{5}\]