Question

If A-B-C and d(A,B) =4.7cm and d (A,C) =15cm.6 find d(B,C) Draw a proportionate
figure​

Answer 1

Answer:

In ∆ABC, AB = 15 cm , BC = 13 cm and AC = 14 cm.

↪ By Heron's formula ,

↪  

= √S (S–A) (S–B) (S–C)

= √21 (21–15) (21–13) (21–14)

= √21 (6) (8) (7)

= √7056

↪  

Therefore, the area of ∆ABC is 84cm² and its altitude on AC is 12 cm.

Step-by-step explanation: