The area of a triangle with side lengths $a, b, c$ is given by $A=\sqrt{s(s-a)(s-b)(s-c)}$, where $\mathrm{s}=(a+b+c) / 2$. What is the area of an equilateral triangle with side length $1.3 \mathrm{~cm}$ ?

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The Answer of The area of a triangle with side lengths $a, b, c$ is given by $A=\sqrt{s(s-a)(s-b)(s-c)}$, where $\mathrm{s}=(a+b+c) / 2$. What is the area of an equilateral triangle with side length $1.3 \mathrm{~cm}$ ?

The Area of a Triangle with Side Lengths a,b,ca, b, ca,b,c

The Area of a Triangle with Side Lengths $a, b, c$