The perimeter of an equilateral triangle is 60 m . The area is
A$10 \sqrt{3} m^2$
B$15 \sqrt{3} m^2$
C$20 \sqrt{3} m^2$
D$100 \sqrt{3} m^2$
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D$100 \sqrt{3} m^2$
D
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The lengths of the sides of $\triangle\text{ABC}$ are consecutive integers. It $\triangle\text{ABC}$ has the same perimeter as an equilateral triangle with a side of length $9\ cm$, what is the length of the shortest side of $\triangle\text{ABC}?$
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