3 years ago

3a-3/a+6=9/6 what is a

Mathematics

2 answers:

Gekata [30.6K]3 years ago

8 0

Answer:

a=1/2

Step-by-step explanation:

gregori [183]3 years ago

3 0

Answer:

0.5 or 1/2

Step-by-step explanation:

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Building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18 \pi18π18, pi m

Ksivusya [100]

the area A of the cross section of the column is $(81\pi )m^2$ .

<u>Step-by-step explanation:</u>

Here we have , building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π, pi meters. We need to find What is the area A of the cross section of the column .Let's find out:

We know that , Circumference of circle = $2\pi r$

⇒ $Circumference = 2\pi r$

⇒ $18\pi= 2\pi r$

⇒ $\frac{18\pi}{2\pi }= \frac{2\pi r}{2\pi }$

⇒ $\frac{18\pi}{2\pi }=r$

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3 years ago

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Irina18 [472]

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Step-by-step explanation:

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