Question

please solve the following question ​

Answer 1

Step-by-step explanation:

area of triangle = (1/2) × 12 × 5

= 30 cm^2

BC = √(12^2 + 5^2) = 13 cm

area of triangle = (1/2) × BC × AD

30 = (1/2) × 13× AD

AD = 60/13 cm = 4.6 cm (approx.)

Answer 2

triangle abc is a right angled triangle,.....(given)

therefore, according Pythagoras theorem

(AB)SQUARE +(AC)SGUARE =BC SQUARE

THEREFORE, 5square + 13=BC Square

therefore,25+169=BC Square

194=BC Square

therefore, BC=√194