Question

tomorrow is my exam please do it fast​

Answer 1

hey mate your answer↓

a=45, b=35, c=42

s=a+b+c/2=45+35+42/2=122/2=61cm

by heron's formula,

Area of triangle= √s(s-a)(s-b)(s-c)

=√61(61-45)(61-35)(61-42)

=√61×16×26×19

=√482144

=694.36sq.cm

hope that it will help you