What is the area of the equilateral triangle? Round to the nearest square centimeter. Do not include units

Mathematics

2 answers:

ziro4ka [17]3 years ago

5 0

The answer should be around 28 square centi. rounding from about 27.71

swat323 years ago

3 0

Area of an equilateral triangle is:

$\frac{ \sqrt{3}}{4} 8^{2}=16\sqrt{3}=27.7128≈28$

so your answer is 28

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$\large\boxed{D.\ \dfrac{8}{9}}$

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$\text{We know:}\\\\P(A|B)=\dfrac{P(A\ \cap\ B)}{P(B)}\\\\\text{We have:}\\\\P(A\ \cap\ B)=\dfrac{2}{3},\ P(B)=\dfrac{3}{4}.\\\\\text{Substitute:}\\\\P(A|B)=\dfrac{\frac{2}{3}}{\frac{3}{4}}=\dfrac{2}{3}:\dfrac{3}{4}=\dfrac{2}{3}\cdot\dfrac{4}{3}=\dfrac{8}{9}$