Question

Find the aera of triangle whose sides are 18 cm,24cm,30cm. Also find the length of the altitute corresponding to the largest side.​

Answer 1

Answer:

S=a+b+c/2

= 18+24+30/2

= 72/2

36

Underoot

S(s-a) (S-B) (s-c)

Underoot

36(36-18)(36-24)(36-30)

Underoot

36*18*12*6

Underoot (we make the factors)

6*6*2*3*3*6*2*6

Without Underoot

6*2*3*6

216cm.

Answer 2

finding area of triangle by Heron's formulae..

= √s(s-a) (s-b) (s-c)

s=a+b+c/2

s=18+24+30/2

s=36....

Now..

√36(36-18) (36-24) (36-30)

√36(18) (12) (6)

√36×1296

√46656

=216...

so the area of triangle = 216 cm sq. ....

...

Hope it helps you!! :)