Question

angle abc is an isosceles triangle AB is equal to 3 X + 2 Y - 12 AC is equal to 2 x minus 3 Y + 13 and BC is equals to 4 x minus 2 Y + 4 in the perimeter of the triangle is 38 cm find the length of the side so ABC

Answer 1

Step-by-step explanation:

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

Area of triangle=

2

1

×base×height=

2

1

×AB×AC

=

2

1

×5×12=30cm

2

Now, in ΔABC,

Area of triangle ABC=

2

1

×BC×AD

⇒30=

2

1

×13×AD

⇒ AD=

13

30×2

=

13

60u

cm.