Question

The sides of a traingle are in the ratio 13:14:15 and it perimeter is 84 cm find the area of the traingle

Answer 1

let the ratios be =x
ATQ
13x+14x+15x=84
42x=84
x=84/42
x=2

sides=>13(2)=26cm
14(2)=28cm
15(2)=30cm

84/2=42

herons formula
√S(s-a)(s-b)(s-b)
√42(42-26)(42-28)(42-30)
√42(16)(14)(12)
√3x7x2x2x2x2x2x2x7x2x2x3
16x3x7
336cm^2. answer

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Answer 2

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