In triangle ABC, AD is a median. If AB = 6 cm
AC = 8 cm and AD = 5 cm, find BC
Answers
Answered by
18
Step-by-step explanation:
by Pythagoras
In triangle ABD
BD square= AB square-AD square
- BD square = 6 square - 5 square
- BD square = 36 -25
- BD = √9
BD= 3cm
so in triangle ADC
DCsquare = AC square- AD square
DC = √(8 square - 5square)
DC = √(64 - 25)
DC = √49
DC= 7cm
so BC = BD + DC
BC = 3+7
BC= 10cm(ANS)
Answered by
4
Answer:
Formula
ABsquared+ADsquared + AC squared
=BCsquared
6squared+5squared+8squared=BCsquared
36+25+48=BCsquared
109=BCsquared
109divided by 2=BCsquared
57.5=BC
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