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Anit [1.1K]
3 years ago
6

Identify the volume and surface area of the sphere in terms of π. HELP PLEASE!!

Mathematics
1 answer:
Helen [10]3 years ago
3 0

Answer:

First choice V = 18,432π m^3; S = 2,304π m^2

Step-by-step explanation:

Start with the two formulas:

Volume of a circle:

V = \dfrac{4}{3} \pi r^3

Surface area of a circle:

S = 4 \pi r^2

Now use r = 24 m in each formula.

Volume:

V = \dfrac{4}{3} \pi (24~m)^3

V = \dfrac{4}{3} \pi (13,824~m^3)

V = 18,432\pi~m^3

Surface area:

S = 4 \pi r^2

S = 4 \pi (24~m)^2

S = 4 \pi (576~m^2)

S = 2,304\pi ~m^2

Answer: First choice V = 18,432π m^3; S = 2,304π m^2

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3 years ago
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Evaluate without a calculator:
noname [10]

Answer:

240

Step-by-step explanation:

4 x -5 = -20

-20 x -12 = 240

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hope this helps!

4 0
2 years ago
Please help me on this <br> U need to zoom in
rodikova [14]
Not sure if you can do this but it sounds like a velocity/time/distance equation.
d=vt
v=d/t
t=d/v

70 w/m = t
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She can type 70 words per minute (w/m). There are 350 words per page (w/p). She needs 15 pages. So first you have to find how many words she can type in one hour. 60 minutes in an hour, she can type 70 w/p.

60x70=4,200 words per hour (w/h).

Next you should find out how many words on 15 pages total.
350x15= 5,250.

I would put 4,200/5,250 as a fraction to gage how much she has left. She has most of it done already in ONE HOUR. Reduced, she has done 4/5s of the essay. Now you just need to get 1/5 of 5250, which is 1050.

She needs to do 1050 words. If one minute is 70, do 1050/70 which is 15.

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3 0
3 years ago
What should the following rate be divided by to convert it to a unit rate?<br> 6 inches<br> 12 hours
iragen [17]

Answer:

0.5 Inches per hour

Step-by-step explanation:

Most normal people won't know exactly what unit rate is, or how to calculate it. So I'm here to help!

This is a fraction equal to

6 inches ÷ 12 hours

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 12

6 inches ÷ 12

12 hours ÷ 12

=  

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0.5 inches

hour

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Glad I was able to help!

7 0
3 years ago
Amy has completed 21 deliveries so far this week.she needs to make 60 deliveries for the week.what percentage of her deliveries
Nonamiya [84]

Answer:

65% to go or 35% already delivered

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Amy has completed 35% of her deliveries since 21/60 is .35

If the question is how much she has left, Amy needs to complete 65% more of her deliveries.

If the question is how much she has completed, she has delivered 35% of her deliveries.

7 0
3 years ago
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