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tangare [24]
3 years ago
7

How do you calculate the area of a circle with the diameter? what's the formula?

Mathematics
1 answer:
alexdok [17]3 years ago
3 0
Area of a circle is pi times the radius squared.

If you know the diameter, just divide it by 2 to get the radius.
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This figure is made up of a rectangle and parallelogram.
patriot [66]

calculate length of the sides of the rectangle and multiply then do the same with the parallelogram

 Total area is 51 square units

7 0
3 years ago
P and W are twice-differentiable functions with P(7)=2(W(7)). The line y=9+2.5(x-7) is tangent to the graph of P at x=7. The lin
fiasKO [112]

Using the product rule, we have

m(x) = x W(x) \implies m'(x) = xW'(x) + W(x)

so that

m'(7) = 7W'(7) + W(7)

The equation of the tangent line to <em>W(x)</em> at <em>x</em> = 7 has all the information we need to determine <em>m'</em> (7).

When <em>x</em> = 7, the tangent line intersects with the graph of <em>W(x)</em>, and

<em>y</em> = 4.5 + 2 (7 - 7)   ==>   <em>y</em> = 4.5

means that this intersection occurs at the point (7, 4.5), and this in turn means <em>W</em> (7) = 4.5.

The slope of this tangent line is 2, so <em>W'</em> (7) = 2.

Then

m'(7) = 7\cdot2 + 4.5 = \boxed{18.5}

4 0
2 years ago
What set of order pairs is a function?
Elza [17]
A function is a set of ordered pairs in which no two different ordered pairs have the same x -coordinate.

Btw you need to add an image so we can see which the order pairs
7 0
3 years ago
10(3 + 10u) what is the answer?
photoshop1234 [79]
The correct answer is 30+100u. Hope this helps!!
3 0
2 years ago
Read 2 more answers
Which shows the quotient of g and 7?
egoroff_w [7]
The answer is d because quotient means the outcome of a division between two numbers. So therefore it has to be a division equation, which is d.
4 0
2 years ago
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