A solid cone of height 12cm and radius 9cm is recast into a solid sphere. Calculate the surface area of the sphere​

Answers

Answer 1

Answer:

1017.8

Step-by-step explanation:

this is the formula 4πr2

hope this helps: )

Answer 2

Answer:

Step-by-step explanation:

Volume of cone = π9²⋅12/3 = 324π cm³

volume of sphere = 4πr³/3 = 324π

r = ∛243

surface area of sphere = 4πr² ≈ 155.8π


Related Questions

what is the greatest common factor of 3 and 21x?

Answers

Answer:

3

Step-by-step explanation:

3 ÷ 3 = 1

21x ÷ 3 = 7x

There is no other common factor.

Work out the question (-5)2

Answers

Answer:

-10 or 25 (read my explanation)

Step-by-step explanation:

(-5)2

-5*2=-10

(Unless the 2 is supposed to be an exponent)

If it is supposed to be an exponent the answer is 25

(-5)^2

25

[tex]\huge\boxed{Hi\;there!}[/tex]

(-5)2 means negative five times 2.

The answer is -10.

Remember, if we multiply a negative times a positive, we get a negative number.

[tex]\huge\boxed{\rm{Hope\:it\:helps!}}[/tex]

[tex]\huge\bf{Good\:luck!}[/tex]

[tex]\huge\mathfrak{LoveLastsAllEternity}[/tex]

The front part of a tent is 8 feet long and 5 feet tall.
What is the area of the front part of the tent?

Answers

40 is the answerrrr dude

Answer:

20

Step-by-step explanation:

A=1/2bh

You multiply 8x5 then divide it by 2

PLEASE HELP ME I NEED THIS REALLY BAD

Answers

Answer:

z=70, y=102

Step-by-step explanation:

180-110 = 70

so, z=70

99+89+70 = 258

360-258 = 102

so, y=102

Find the value of x. 55

Answers

Answer:

90 - 55 = 35

its 35

Step-by-step explanation:

Answer:

35 because 90-55 is 35

PLEASE ANSWER ASAP !!!

Answers

(0,1) you just look at the y-axis and put a 0 in place of the x

HELP ME ANSWER THIS PLEASE

Answers

Answer:

3x + 3

Step-by-step explanation:

what is the price paid for a 60% pair of jeans after a 35% discount

Answers

Answer:

Step-by-step explanation:

24

Answer:

39

Step-by-step explanation:

Helpppppppppppppppp pleaseeeee

Answers

Answer:

<2=65 degrees

Step-by-step explanation:

Information provided:

Right angle=90

<25 degrees

Triangles add up to 180 degrees

90+25=115

180-115=65 degrees

Hope this helps! :)

Bonjour mon exercice c'est 36%de 25km. C'est un exercice de maths à faire pouvez vous m'expliquer svp merci

Answers

Answer:

9km

Step-by-step explanation:

La question précise que:

36% de 25km

La signification de "OF" mathématiquement = x (multiplication)

Par conséquent:

36% de 25km

= 36/100 × 25 km

= 9 km

-5(4x-6) help pls I am dead so I can't solve it.

Answers

Answer:

-20x+30

Step-by-step explanation:

Using distributive property take -5 and multiply 4x and -6 to that -5

That equals 4 x 5 is 20

add the negative -20

add the x -20x

-5 x -6 = 30

add the final product together

-20x+30

How many solutions does the system pf equations below have?​

Answers

Answer:

Your answer is One solution

Hope that this is helpful. Tap the crown button, Like & Follow me

Francisco, his sister Greta, his mother, and his father each take care of part of the family’s vegetable garden. Francisco takes care of 20% of the plants, which is 12 plants. How many total plants are in the garden?

Answers

Answer:

I don’t know the answer I just need some points to ask more questions !!! have a good day !!

Step-by-step explanation:

Use the multiplier method to increase £258 by 43%
You must show your working out.

Answers

Answer:

£368.94

Step-by-step explanation:

The multiplier for 43% is 0.43

0.43 x 258 = 110.94 which is 43%

But if you are increasing 258 by 43% you must add on 258 as well

Or instead you can just do 258 x 1.43= 368.94

solve for y.
y/3 = 2
y = ?

Answers

Answer:

y=6

Step-by-step explanation:

Reverse the order: y=2x3

y=6.

Answer:

y = 6

Step-by-step explanation:

y/3 = 2

=> y = 2(3)

=> y = 6

describe the meaning of the following symbols​

Answers

1st on left is the greater than
2nd on left is less than


1st on right is greater than or equal to
2nd on right is less than or equal to

Answer:

> = less than

< = greater than

3. less than or equal to

4. greater than or equal to

Step-by-step explanation:

For camping mrjohn son needs 12 1-2 feet of rope to tie the logs that he has to cut for the campfire and 9 3-4 feet of the rope for the clothesline what is the total length of rope he needs for the camping trip

Answers

Answer:

Mr. John will need not less than [tex]22\frac{1}{4}[/tex] feet of rope for the camping trip

Step-by-step explanation:

To get the total length of rope Mr John needs for the camping trip, we can simply add up the length of rope he needs to tie the logs to the length of rope he needs for the clothesline.

Length of rope he needs to tie the logs = [tex]12\frac{1}{2}[/tex]

Length of rope he needs for the clothesline = [tex]9 \frac{3}{4}[/tex]

to sum this up, we, first of all, add up the whole numbers

12 + 9 = 21.

We then keep this aside then add up the fractions

[tex]\frac{1}{2} +\frac{3}{4} =\frac{2 +3}{4} = 5/4 = 1\frac{1}{4}[/tex]

We then add this to our whole numbers

[tex]21 + 1\frac{1}{4} =22 \frac{1}{4}[/tex]

Mr. John will need not less than [tex]22\frac{1}{4}[/tex] feet of rope for the camping trip

What is the Hypotenuse of 12mi and 16mi

Answers

20mi

H^2 = 12^2 + 16^2
H^2 = 144 + 256
H^2 = 400

H = square root of 400 = 20

Which equation has a slope of -2 and passes through the point (3, 5)?

Answers

Answer:

y=-1/5x+32/5

Step-by-step explanation:

3f^4g^3 x 8fg^4 / (6f^2g^3)^2 how do you do this?

Answers

9514 1404 393

Answer:

  2/3·fg

Step-by-step explanation:

The applicable rules of exponents are ...

  (a^b)(a^c) = a^(b+c)

  (a^b)/(a^c) = a^(b-c)

  (ab)^c = (a^c)(b^c)

  (a^b)^c) = a^(bc)

__

We assume your 'x' is a multiplication symbol, so you want to simplify ...

  [tex]3f^4g^3 \times\dfrac{ 8fg^4}{ (6f^2g^3)^2}\\\\=\dfrac{3\cdot8f^{4+1}g^{3+4}}{6^2f^{2\cdot2}g^{3\cdot2}}=\dfrac{24}{36}f^{5-4}g^{7-6}\\\\=\boxed{\dfrac{2}{3}fg}[/tex]

Conner has collected 29 out of the 50 state flags. What percentage of the state flags has Conner collected.

Answers

Answer:

58%

Step-by-step explanation:

total is 50 and 29 has been collected, so this can be expressed as 29/50. when divided is 0.58 multiply it by 100 and you get 58%

A triangular prism is 50 yards tall and has a base area of 40 square yards. What is the volume of the prism?

Answers

Answer:

1000

Step-by-step explanation:

1/2 (b x l x h)

1/2 (40 x 50)

1/2 (2000)

1000

will someone plz help

by the way funny photo

Answers

110.859

Hi its me again

Answer:

1026

Step-by-step explanation:

as everyone knows that up to 4 the number increases so here it is 4 so it decreases we can't increase it .

hope it helps.

for numbers 19 and 20 you have to solve for the missing angle.​

Answers

Answer:19. 17 degrees

20. 49 degrees

Step-by-step explanation:

Because of the postulate 50+?=67

So ?=17

And 20.

94+?=143

So

?=49

(Edit)I though you only meant 19 and 20

21. X=8

22. X=12

23.x=8

24.x=7

A rectangular garden has a length that is 3 feet longer than its width. Let w represent the width of the garden in feet. The entire garden is surrounded by a 2-foot-wide cement walkway.

Answers

Answer:

Step-by-step explanation:

From the question, we're told that the length of the garden is 3 feet longer than its width. Mathematically, we would have

l = w + 3, where

l = length of the garden

w = width of the garden

Again we're told that this same garden has a walkway of about 2 foot wide. Mathematically we would have that as

W(w) = 2, where

W(w) = width of the garden.

That's all the parameters given in the question

A study showed that the ratio of the number of people who get their news from print sources to the number of people who get their news from social media sources is 3:7. Based on the ratio, how many people in a town of 900 people get their news from social media sources?

Two classmates solved this problem and their work is shown below. Which classmate solved the problem correctly? Explain the error in the classmate who solved it incorrectly.

Answers

Answer:

270 = number who get news from print sources

630 =  number who get news from social media

Step-by-step explanation:

Let 3x = number who get news from print sources

and 7x = number who get news from social media

Then 3x + 7x = 900

10x = 900

x = 90

3x = 3(90) = 270 = number who get news from print sources

7x = 7(90) = 630 =  number who get news from social media

Check:  270/630 = 3/7 and 270 + 630 = 900

The supplement and twice the complement of an angle differ by 35 degrees. Find the angle. (Show all work)

Answers

The angle is 35 degrees

(180 - x) = 2(90 - x) + 35
180 - x = 180 - 2x + 35
180 - x = 215 - 2x
180 + x = 215
x = 35

Check:
180 - 35 = 145 supplement
90 - 35 = 55 complement
55*2 = 110 twice the complement
110 + 35 = 145 :)

Answer:

35 degrees

Step-by-step explanation:

(180-x)= supplement

(90-x)=complement

(180-x)-2(90-x)=35

180-x-180+2x=35

x=35

The product of two integers is -8. What are the two
integers?​

Answers

Answer:

This has multiple answers:

(4, -2) (2, -4) (8, -1) (1, -8)

Step-by-step explanation:

4*-2 = -8

-4* 2 = -8

-1*8 = -8

1*-8 =-8

Last week, Jamie counted the number of rice grains in his plate, and found he had 250
grains.
He had rice this week, and counted only 175 grains.
Find the percentage decrease.

Answers


30% decrease
175 divided by 250 = 0.7
1 - 0.7 = 0.3
0.3 = 30%

help me please I will give brainiest​

Answers

8.a)
A= (1,1) A’= (3,3)
B= (4,6) B’= (12,18)
C= (6,1). C= (18,3)

8b.)

A= (1,1) A’(0,5,0.5)

B= (4,6) B(2,3)

C= (6,1). C(3,0.5)


Hope this helped ! :)
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