Question

8.
angelABC is issosceles with AB = AC= 7.5cm
and BC = 9 cm (Fig 11.26) The Height Ad
from A to BC is 6 CM. Find the
area of angle ABC what will be the
height from C to AB ie., CE?​

Answer 1

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.