Question

find the area of a triangle whose two sides are 6cm and 8cm and semiperemetre is 12cm​

Answer 1

Answer:

Semi-perimetre(s) = a+b+c/2

12 = 6+8+c/2

12 = 14+c/2

24 = 14+c

c = 24-14

c = 10cm

Area = s(s-a)(s-b)(s-c)

= 12(12-6)(12-8)(12-10)

= 12×6×4×2

= 576cm^2