Is 13cm, 14 cm, and 15 cm a right triangle?
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Answer:
yes, by Heron's formula
Step-by-step explanation:
A=\sqrt{s(s-a)(s-b)(s-c)}
Where s=\frac{a+b+c}{2}
a = 13
b = 14
c = 15
s=\frac{13+14+15}{2}
s=21
A=\sqrt{21(21-13)(21-14)(21-15)}
A=84
Hence the area of the triangle is 84 sq.m.
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