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2 years ago

The area of circle is 64 square meters.What is the radius?

Mathematics

2 answers:

riadik2000 [5.3K]2 years ago

7 0

Answer:

r = 4.51

Step-by-step explanation:

To find the radius of a circle using the given area, you use the formula r = $\sqrt\frac{A}{\pi}$

In this given problem, it would be $\sqrt\frac{64}{\pi}$ =4.51352 or 4.51

Mrac [35]2 years ago

3 0

Answer:

radius=8

Step-by-step explanation:

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2 years ago

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A is the correct answer.......

Here is the work shown:

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2 years ago

A cylinder has a base radius of 4m and a height of 6m. What is its volume in cubic m, to the nearest tenths place?

Ronch [10]

<h3>Answer:</h3>

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<h3>Step-by-step explanation:</h3>

A cylinder is a shape with straight sides with circular or oval cross-sections. We know that the cylinder in the question must be a circular cylinder due to its radius description.

Volume Formula

A circular cylinder has a volume of $V=\pi r^2h$ . In this equation, V is the volume, r is the radius, and h is the height. The question tells us that r=4m and h=6m. So, we can plug these values into the formula.

Solving for Volume

To solve plug the values into the formula and rewrite the equation.

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Next, apply the exponents.

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Then, multiply the constants.

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Finally, multiply the remaining terms. Remember to use the pi button on the calculator and not an estimation to get a more exact value.

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2 years ago

I could use some help doing this simple math problem lol.

alexira [117]

$D:k-9\geq 0 \wedge k\geq0\\
D:k\geq 9 \wedge k\geq0\\
D:k\geq 9\\
\sqrt{k-9}-\sqrt k=-1\\
\sqrt{k-9}=-1+\sqrt k\\
k-9=(-1+\sqrt k)^2\\
k-9=1-2\sqrt k+k\\
2\sqrt k=10\\
\sqrt k =5\\
k=25

$

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2 years ago

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VLD [36.1K]

Answer:

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Step-by-step explanation:

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2 years ago