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The sides of a triangle are in the ratio 5: 12: 13 and its perimeter is 300 m, its area is?

A.3000 sq m
B.3127 sq m
C.3225 sq m
D.3750 sq m
Answer and Feedback
Answer:A
Feedback: 5x + 12x + 13x = 300 => x = 10 a = 50, b = 120, c = 130 S = (50 + 120 + 130)/2 = 150
A = Square root of s(s-a)(s-b)(s-c), s = (a+b+c)/2
A=√(150*100*30*20) = 3000 Sq m

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