Question

area of triangle ABC is equal to ab=5cm, BC=8cm,ca=7cm cm

Answer 1

By Pythagoras theorem ABC is right angle triangle
area=1/2 length×breadth
=1/2 7×5
=35/2
=17.5 sq.cm

Answer 2

area= √s(s-a)(s-b)(s-c)
=√10*5*2*3
=√300
=10√3cm²