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3 years ago

Find the area of the shaded region

Mathematics

1 answer:

Lera25 [3.4K]3 years ago

3 0

Answer: Ssh=1323π

Step-by-step explanation:

The point O Centre big circle r1=2r2=4 then radius small cirler r2=21
Then S1=42²π=1764 ; S2=21²π=441 π S(shaded)=S1-S2=?
Ssh=(1764-441)π=<u>1323π</u>

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Please explain and answer

krek1111 [17]

Step-by-step explanation:

$v \: = \: \pi \: {r}^{2} \times \frac{h}{3}$

rearrange to get

$48\pi \: = \: \pi {r}^{2} \times \frac{9}{3}$

remove pi from both sides

$48 \: = {r}^{2} \: \times 3$

$\frac{48}{3} = {r}^{2}$

$16 = {r}^{2}$

$r = \sqrt{16}$

$r = 4$

8 0

2 years ago

If the volume of the planter is 3,072 cubic inches, how tall is the planter?

andrezito [222]

$\it \mathcal{V} =\dfrac{\mathcal{A}_b\cdot h}{3} \Rightarrow h = \dfrac{3\mathcal{V}}{\mathcal{A}_b}= \dfrac{3\cdot3072}{\mathcal{A}_b}\ \ \ \ \ (*)
\\\;\\ \\\;\\
\mathcal{A}_b = \dfrac{\ell^2\sqrt3}{4} = \dfrac{16^2\sqrt3}{4} =\dfrac{16\cdot16\sqrt3}{4} =4\cdot16\sqrt3=64\sqrt3\ \ \ \ (**)
\\\;\\ \\\;\\
(*),\ (**) \Rightarrow h=\dfrac{3\cdot3072}{64\sqrt3} = \dfrac{3\cdot48}{\sqrt3} = \dfrac{\sqrt3\cdot\sqrt3\cdot48}{\sqrt3} = 48\sqrt3\ inches$

4 0

3 years ago

Points M and N on the coordinate grid below show the positions of two midfield players of a soccer team:Which statement best des

pogonyaev

N is M reflected across the y-axis; only the signs of the x-coordinates of M and N are different.

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

In question no statements are available , below statements are the required one:

N is M reflected across the x-axis; only the signs of the x-coordinates of M and N are different: N is reflected over y-axis not x-axis so, this option itself is wrong!
N is M reflected across the x-axis; only the signs of the y-coordinates of M and N are different: N-M is reflected over y-axis not x-axis , so this option is also wrong.
N is M reflected across the y-axis; only the signs of the x-coordinates of M and N are different: N-M are reflected over y-axis correct and sign of only x co-ordinate is changed as Co-ordinates are $M(-2,-2.5)$ and $N(2,-2.5)$ .Hence, this statement is correct!
N is M reflected across the y-axis; only the signs of the y-coordinates of M and N are different. N-M is reflected over y-axis , and sign of only x co-ordinate is changed not y . False statement.

We can see that point Correct statement is 3.

5 0

3 years ago

What is 39.51 rounded to the nearest second

pogonyaev

36 is the answer ( i hope)

8 0

4 years ago

 A red candle is 115 inches tall. The label claims that the candle will melt 1 1/8 inch every hour it burns. If the label is

OverLord2011 [107]

This question is pretty simple!

All you need to do is divide 115 by 1 1/8 or 1.125

And your answer should be 102.22

So you can round this to 102 hours. :D

6 0

3 years ago