Question

plz answer my question by method by method I will mark your answer if you will follow me.​

Answer 1

Answer:

According to your question,

length of sides of triangle

a=25cm

b=39cm

c=56cm

$by \: herones \: formola$

area of triangle=√s(s-a)(s-b)(s-c)

now s=a+b+c/2

=25+39+56/2

=60

on putting the value

area of triangle=√60(60-25)(60-39)(60-56)

=√60×35×21×4

=√176400

=420cm.

Thank you