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2 years ago

I need help here with explanation pleaseeeee

Mathematics

1 answer:

Murrr4er [49]2 years ago

4 0

(4,80) it’s easy because x comes before y

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What is the diameter of a circle whose radius is 6.45 meters

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Diameter is just the radius times 2

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2 years ago

What is the value of x?

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Step-by-step explanation:

The volume of a sphere is

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Start by multiplying both sides by 3 over 4 pi:

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2 years ago

Let A(t) be the area of a circle with radius r(t), at time t in min. Suppose the radius is changing at the rate of drdt=6 ft/min

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Answer:

The rate of change is $108\pi$ ft^(2)/min

Step-by-step explanation:

The area of a circle is given by the following equation:

$A(t) = \pi r^{2}$

To solve this question, we have to realize the implicit differentiation in function of t. We have two variables, A and r. So

$\frac{dA(t)}{dt} = 2\pi r \frac{dr}{dt}$

We have that:

$\frac{dr}{dt} = 6, r = 9$ .

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$\frac{dA}{dt} = 108\pi$

Since the area is in square feet, the rate of change is in ft^(2)/min.

So the rate of change is $108\pi$ ft^(2)/min

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Step-by-step explanation:

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2 years ago

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