Question

find the area of the triangle whose sides
(
(iii) 5 cm, 6 cm and 7 cm.​

Answer 1

s = a+b+c/2

s = 9

so the formula of area of triangle is

= under root s(s-a)(s-b)(s-c)

= under root 9(9-5)(9-6)(9-7)

= under root 9(4*3*2)

= under root 216

that is 6 root 6