The sides of a triangle are 56 cm, 60 cm and 52 cm long. Then the area of the triangle is
a = 56, b = 60, c = 52
s = (a + b + c)/2
⇒ s = (56 + 60 + 52)/2 = 168/2 = 84.
Area(Δ) = √s(s-a)(s-b)(s-c)
⇒ Area(Δ) = √84(84-56)(84-60)(84-52)
⇒ Area(Δ) = √84×28×24×32
⇒ Area(Δ) = 1344cm2
Hence, the correct option is (C).