Question

In triangle ABC. AD is 12 cm, AB And AC are 13 cm, AD perpendicular to BC. Find the length of BC

Answer 1

Answer:

In right angles triangle BAC, AB =5 cm and AC = 12 cm

Area of triangle =1/2 x base x height

= 1/2x AB x AC

= 1/2 x 5 x 12 = 30 cm2

Now, in Δ ABC,

Area of triangle ABC =1/2 x BC x AD

⇒ 30 = 1/2 x 13 x AD

⇒ AD = (30 x 2)/13

= 60/13 cm

Answer 2

Answer:

ans in 10 CM

Step-by-step explanation:

by Pythagoras theorem

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