Solve.If the three lengths of the sides of a triangle are known, Heron's formula can be used to find its area. If a, b, and c are the three lengths of the sides, Heron's formula for area is: A = 
where s is half the perimeter of the triangle, or s = 
(a + b + c).Use this formula to find the area of the triangle if a = 6 cm, b = 10 cm and c = 14 cm. 
A. 3
sq cm
B. 15
sq cm
C. 480 sq cm
D. 15
sq cm
Answer: B
Mathematics
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B. 36x + 54 - 
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