Question

lf A ABC is isoscelesrrrith AB - AC = 7.5 cm

and BC : 9 cm (Fig). The heightAD from A to

BC,is6cm.Findthe areaof A ABC​

Answer 1

Answer:

ANSWER

In ΔABC, AD=6cm and BC=9cm

Area of triangle=

2

1

×base×height=

2

1

×BC×AD

=

2

1

×9×6=27 cm

2

Again, Area of triangle=

2

1

×base×height=

2

1

×AB×CE

⇒27=

2

1

×7.5×CE

⇒ CE=

7.5

27×2

⇒ CE=7.2cm

Thus, height from C to AB i.e., CE is 7.2cm.