anonymous
  • anonymous
Find the surface area for a sphere with a radius of 10 feet. Round to the nearest whole number. 1,256 ft2 4,189 ft2 1,089 ft2 1,568 ft2 Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number. 1,257 ft3 4,187 ft3 1,089 ft3 1,568 ft3 Find the surface area for a sphere with a radius of 7 cm. Round to the nearest whole number. 307 cm2 1,436 cm2 1,020 cm2 615 cm2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@qweqwe123123123123111
anonymous
  • anonymous
A = 4πr² V = 4/3 πr³
anonymous
  • anonymous
is that too the first question??

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More answers

anonymous
  • anonymous
hey my friend says your really smart qwe
anonymous
  • anonymous
They're the answers to all 3 of your questions.
anonymous
  • anonymous
I'm not smart. I have google. :-)
anonymous
  • anonymous
1256 is step a for question 1
anonymous
  • anonymous
1256 is the answer to question 1.
anonymous
  • anonymous
thats what i thought cause i did v and i was all liek wait what!!!
anonymous
  • anonymous
Yes...volume will be somewhat larger... :-)
anonymous
  • anonymous
i meant 3rd questions answer is 615.44
anonymous
  • anonymous
Yes, 615 is question 3. :-)
anonymous
  • anonymous
and on volume does he mean 1/3?
ryan123345
  • ryan123345
Area of Sphere Formula
anonymous
  • anonymous
No. He means 4/3 (same as 1.33333.....) v = 4/3 pi r^3
ryan123345
  • ryan123345
\[A = \frac{ 4 }{ \pi r^2 }\]
ryan123345
  • ryan123345
so for the last one your equation would be.
anonymous
  • anonymous
is it c?
ryan123345
  • ryan123345
\[\frac{ 4 }{ \pi(49) }\]
anonymous
  • anonymous
C? No.
anonymous
  • anonymous
What's pi * r^3 ?
anonymous
  • anonymous
You still here?
anonymous
  • anonymous
3140 sorry i wasnt there
anonymous
  • anonymous
@tafkas77
anonymous
  • anonymous
Hi there! You mentioned me; what can I help you with? I'm not sure which question you're looking at. :)
anonymous
  • anonymous
the middle one
anonymous
  • anonymous
Are you still trying to figure out the answer to #3?
anonymous
  • anonymous
.... Hello? @niall1Dawesome You there?
anonymous
  • anonymous
sorry my computer was lagging really bad
anonymous
  • anonymous
no number 2 i already know 1 and 3
anonymous
  • anonymous
@tafkas77
anonymous
  • anonymous
Okay. I'm taking a look at this right now. :)
anonymous
  • anonymous
Eureka! I have the answer. :) Do you know the formula to calculate this?
anonymous
  • anonymous
okay and hey you changed your icon cool
anonymous
  • anonymous
Ha ha, yeah. :) I felt like switching it up a bit. So do you know the formula to calculate this?
anonymous
  • anonymous
Are you still experiencing lag?
anonymous
  • anonymous
a little
anonymous
  • anonymous
and well isnt the formula V = 4/3 πr³
anonymous
  • anonymous
Okay, I think you are still experiencing a little lag. No worries, I can still help you with this. Hopefully when you see it, you'll get it! :) Perfect formula! :)
anonymous
  • anonymous
ya your post jsut showed up
anonymous
  • anonymous
So let's plug in the values from your problem: \[v = 4/3 * \pi * 10^3\] \[v = 4/3 * \pi * 1,000\] When you plug this all in (you can do it on a calculator), you'll find that 4/3 = 1.3. so: \[v = 1.3 * 3.14 * 1,000\] And then you'll get your answer. :)
anonymous
  • anonymous
ok i will do that
anonymous
  • anonymous
4082
anonymous
  • anonymous
Sorry; my mistake. You should have rounded 1.3 and input 1.4 (since 1.3333333... is irrational) and you would have gotten 4,187 :)
anonymous
  • anonymous
oh lol
anonymous
  • anonymous
XD Hey, everyone makes mistakes... ugh... can't say that without thinking of Hannah Montana...
anonymous
  • anonymous
hey can you check my answer to a question like this
anonymous
  • anonymous
yes I sure can! :)
anonymous
  • anonymous
Find the volume for a sphere with a radius of 7 cm. Round to the nearest whole number. 307 cm2 1,436 cm2 1,020 cm2 615 cm2 im pretty sure its b but im going to redo the math
anonymous
  • anonymous
hehe hannah montana lol
anonymous
  • anonymous
yea i think it is b
anonymous
  • anonymous
You are absolutely correct. :)
anonymous
  • anonymous
yay lol thx for helping me
anonymous
  • anonymous
You're welcome! :D
anonymous
  • anonymous
:) everybody makes mistakes everybody has those days 1 2 3 4 lol i had too

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