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enot [183]
2 years ago
8

~ P L E A S E ~ H E L P ~ M E ~ O U T ~

Mathematics
1 answer:
DerKrebs [107]2 years ago
7 0
Formula for area of a circle: Pi * R^2.
Radius = diameter/2
Radius = 16m/2
Radius = 8m

Formula and equation:
Pi * (8)^2
= Pi * 64m2
= 201.0 m2.
So, in conclusion, the answer to this question is C)64 * Pi * m^2.
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What is the slope of the coordinates (8,1) and (5,-2)
gulaghasi [49]

Answer:

I know this isn't the answer you'd like, but there's a graphing app called ''desmos'' and you can enter the equation in there and it gives you your answer.

Step-by-step explanation:

3 0
3 years ago
Please help me with this, I really need it, thanks.<br> (Geometry)
horsena [70]

Answer:

  a.  yes

  b.  Q

  c.  line MP

Step-by-step explanation:

a. "Collinear" means "on the same line". The diagram shows point K on the same line with M and P, so ...

  yes, M, P, and K are collinear

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b. N, W, and U are the corners of face NUWQ, so point Q is also in that plane.

__

c. The plane MPQ includes face MPQN. The plane TVP includes face TVPM.

Line MP (or PM) is the line where these planes intersect.

8 0
3 years ago
Use spherical coordinates to find the volume of the region that lies outside the cone z = p x 2 + y 2 but inside the sphere x 2
Harman [31]

I assume the cone has equation z=\sqrt{x^2+y^2} (i.e. the upper half of the infinite cone given by z^2=x^2+y^2). Take

\begin{cases}x=\rho\cos\theta\sin\varphi\\y=\rho\sin\theta\sin\varphi\\z=\rho\cos\varphi\end{cases}\implies\mathrm dx\,\mathrm dy\,\mathrm dz=\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi

The volume of the described region (call it R) is

\displaystyle\iiint_R\mathrm dx\,\mathrm dy\,\mathrm dz=\int_0^{2\pi}\int_0^{\sqrt2}\int_{\pi/4}^\pi\rho^2\sin\varphi\,\mathrm d\varphi\,\mathrm d\rho\,\mathrm d\theta

The limits on \theta and \rho should be obvious. The lower limit on \varphi is obtained by first determining the intersection of the cone and sphere lies in the cylinder x^2+y^2=1. The distance between the central axis of the cone and this intersection is 1. The sphere has radius \sqrt2. Then \varphi satisfies

\sin\varphi=\dfrac1{\sqrt2}\implies\varphi=\dfrac\pi4

(I've added a picture to better demonstrate this)

Computing the integral is trivial. We have

\displaystyle2\pi\left(\int_0^{\sqrt2}\rho^2\,\mathrm d\rho\right)\left(\int_{\pi/4}^\pi\sin\varphi\,\mathrm d\varphi\right)=\boxed{\frac43(1+\sqrt2)\pi}

4 0
3 years ago
Y=x-2<br> make x the subject
Virty [35]

Answer:

x + 2 = y

Step-by-step explanation:

y = x - 2

x = y - 2

x + 2 = y

6 0
3 years ago
Read 2 more answers
30. A mom bought her kids 3 cartons of milk
lana [24]

Answer:

x = (1.25 * 3 - 6.90) divided by 6

Step-by-step explanation:

this will get the price of all the milk, then take it out of the total price, then divide it by 6 because there are 6 donuts, this will give you the price of 1 donut

8 0
3 years ago
Read 2 more answers
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