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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
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A = 4πr² V = 4/3 πr³
is that too the first question??

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Other answers:

hey my friend says your really smart qwe
They're the answers to all 3 of your questions.
I'm not smart. I have google. :-)
1256 is step a for question 1
1256 is the answer to question 1.
thats what i thought cause i did v and i was all liek wait what!!!
Yes...volume will be somewhat larger... :-)
i meant 3rd questions answer is 615.44
Yes, 615 is question 3. :-)
and on volume does he mean 1/3?
Area of Sphere Formula
No. He means 4/3 (same as 1.33333.....) v = 4/3 pi r^3
\[A = \frac{ 4 }{ \pi r^2 }\]
so for the last one your equation would be.
is it c?
\[\frac{ 4 }{ \pi(49) }\]
C? No.
What's pi * r^3 ?
You still here?
3140 sorry i wasnt there
Hi there! You mentioned me; what can I help you with? I'm not sure which question you're looking at. :)
the middle one
Are you still trying to figure out the answer to #3?
.... Hello? @niall1Dawesome You there?
sorry my computer was lagging really bad
no number 2 i already know 1 and 3
Okay. I'm taking a look at this right now. :)
Eureka! I have the answer. :) Do you know the formula to calculate this?
okay and hey you changed your icon cool
Ha ha, yeah. :) I felt like switching it up a bit. So do you know the formula to calculate this?
Are you still experiencing lag?
a little
and well isnt the formula V = 4/3 πr³
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! :)
ya your post jsut showed up
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. :)
ok i will do that
4082
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 :)
oh lol
XD Hey, everyone makes mistakes... ugh... can't say that without thinking of Hannah Montana...
hey can you check my answer to a question like this
yes I sure can! :)
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
hehe hannah montana lol
yea i think it is b
You are absolutely correct. :)
yay lol thx for helping me
You're welcome! :D
:) everybody makes mistakes everybody has those days 1 2 3 4 lol i had too

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