# The sides of a triangle are 56 cm, 60 cm and 52 cm long. Then the area of the triangle isA. 1322 cm2B. 1311 cm2C. 1344 cm2D. 1392 cm2

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).

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