Question

Fan and medal! Find DG

Answer 1

@iGreen
A.12 cm B.6.5 cm C.9 cm D.8 cm

Answer 2

D, G, F act as ABC in this one i presume
I think its safe to assume E=10 same as F and would D=...3?

Answer 3

Hi,

This is just a suggestion. Since triangle DGF forms a right triangle, why don't you use the Pythagorean theorem to solve for DG?

and yes, it's right to assume that ED is equal to 10 (:

Answer 4

im having a hard time setting this one up

Answer 5

im in a remedial math class for a reason i guess XD

Answer 6

im good at solving just not setting up

Answer 7

Pythagorean theorem is \(\sf hypotenuse^2=adjacent^2+opposite^2\)

so in this case \(\sf DF^2= GF^2 + DG^2\)

you are solving for DG, so it will be like: \(\sf DG^2= DF^2- GF^2 \)
just plug in your given values and evaluate the formula (:

Answer 8

DG=? DF=10^2 GF=6^2

Answer 9

yes, like that.
removing the square of DG, you have to take the square root of both sides. So it will be like this: \(\sf DG= \sqrt{DF^2- GF^2}\)

Answer 10

10^2 - 6^2 is equal to..?

Answer 11

100 and 36

Answer 12

any confusions? don't hesitate to ask (:

Answer 13

yes, then subtract them

Answer 14

100-36=64 and the square root of that is 8

Answer 15

so....DG=8?

Answer 16

correct (:

Answer 17

awesome thanks so much!

Answer 18

no problem ! ^_^