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According to Heron's Formula, if the lengths of the sides of a triangle are a, b and c, and s= (a + b + c)/2,
then the area, A, is given by the formula: A = √s(s-a) (s-b) (s-c). Find the area of a triangle whose
sides are 6ft, 7ft and 11ft.
O A = 21.1 ft²
O A = 18.4 ft²
OA = 19.0 ft²
O A = 20.0 ft²

Respuesta :

caylus

Answer:

Hello,

answer C: 19.0ft (rounded to 1 digit)

Step-by-step explanation:

[tex]s=\dfrac{6+7+11}{2} =12\\\\A=\sqrt{12*6*5*1} =\sqrt{360}= 18,97366596...\approx{19.0}\ (ft^2)[/tex]

Answer:

19.0 ft^2.

Step-by-step explanation:

s = (6 + 7 + 11)/2

   = 12

--> A = √[12(12-6)(12-7)(12-11)]

        = √(12 * 6 * 5 * 1)

        = √360

        = 18.97

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