in trangle ABC , ab=10cm ,bc=17cm and AD=8cm. find Ac
Attachments:
Answers
Answered by
7
Answer:
AC= 13.6 cm.
Step-by-step explanation:
angle d is right angled
hence, by pythagoras theorem
AB²=AD²+BD²
10²=8²+BD²
100=64+BD²
100-64=BD²
36=BD²
∴BD=6
∵BC=BD+CD
∴CD=BC-BD
CD=17-6=11
∴by Pythagoras theorem,
AC²=AD²+CD²
AC²=8²+ 11²
AC²= 64+121
AC²=185
∴AC= 13.6 cm.
Answered by
2
Answer:
21 cm
Step-by-step explanation:
21 cm
how
find by own
Similar questions