Question

will reward medal
If BC = 6 and AD = 5, find DC.


4
4.5
7.2
https://media.glynlyon.com/g_geo_2013/5/groupi60.gif

Answer 1

cant see ur pic...upload it in replies

Answer 2

you have 3 right triangles, apply Pythagoras theorem in each

AC^2 = AB^2 + BC^2
BC^2 = BD^2 + DC^2
AB^2 = AD^2 + BD^2

in each equation you have 1 known and 2 unknowns
so you have a system of 3 equations
do you know how to solve such systems ?

Answer 3

yes, i figured it out. answer is 4.