## niall1Dawesome Group Title 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 one year ago one year ago

1. niall1Dawesome Group Title

@qweqwe123123123123111

2. SithsAndGiggles Group Title

A = 4πr² V = 4/3 πr³

3. niall1Dawesome Group Title

is that too the first question??

4. niall1Dawesome Group Title

hey my friend says your really smart qwe

5. qweqwe123123123123111 Group Title

6. qweqwe123123123123111 Group Title

I'm not smart. I have google. :-)

7. niall1Dawesome Group Title

1256 is step a for question 1

8. qweqwe123123123123111 Group Title

1256 is the answer to question 1.

9. niall1Dawesome Group Title

thats what i thought cause i did v and i was all liek wait what!!!

10. qweqwe123123123123111 Group Title

Yes...volume will be somewhat larger... :-)

11. niall1Dawesome Group Title

i meant 3rd questions answer is 615.44

12. qweqwe123123123123111 Group Title

Yes, 615 is question 3. :-)

13. niall1Dawesome Group Title

and on volume does he mean 1/3?

14. ryan123345 Group Title

Area of Sphere Formula

15. qweqwe123123123123111 Group Title

No. He means 4/3 (same as 1.33333.....) v = 4/3 pi r^3

16. ryan123345 Group Title

$A = \frac{ 4 }{ \pi r^2 }$

17. ryan123345 Group Title

so for the last one your equation would be.

18. niall1Dawesome Group Title

is it c?

19. ryan123345 Group Title

$\frac{ 4 }{ \pi(49) }$

20. qweqwe123123123123111 Group Title

C? No.

21. qweqwe123123123123111 Group Title

What's pi * r^3 ?

22. qweqwe123123123123111 Group Title

You still here?

23. niall1Dawesome Group Title

3140 sorry i wasnt there

24. niall1Dawesome Group Title

@tafkas77

25. tafkas77 Group Title

Hi there! You mentioned me; what can I help you with? I'm not sure which question you're looking at. :)

26. niall1Dawesome Group Title

the middle one

27. tafkas77 Group Title

Are you still trying to figure out the answer to #3?

28. tafkas77 Group Title

.... Hello? @niall1Dawesome You there?

29. niall1Dawesome Group Title

sorry my computer was lagging really bad

30. niall1Dawesome Group Title

no number 2 i already know 1 and 3

31. niall1Dawesome Group Title

@tafkas77

32. tafkas77 Group Title

Okay. I'm taking a look at this right now. :)

33. tafkas77 Group Title

Eureka! I have the answer. :) Do you know the formula to calculate this?

34. niall1Dawesome Group Title

okay and hey you changed your icon cool

35. tafkas77 Group Title

Ha ha, yeah. :) I felt like switching it up a bit. So do you know the formula to calculate this?

36. tafkas77 Group Title

Are you still experiencing lag?

37. niall1Dawesome Group Title

a little

38. niall1Dawesome Group Title

and well isnt the formula V = 4/3 πr³

39. tafkas77 Group Title

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! :)

40. niall1Dawesome Group Title

ya your post jsut showed up

41. tafkas77 Group Title

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. :)

42. niall1Dawesome Group Title

ok i will do that

43. niall1Dawesome Group Title

4082

44. tafkas77 Group Title

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 :)

45. niall1Dawesome Group Title

oh lol

46. tafkas77 Group Title

XD Hey, everyone makes mistakes... ugh... can't say that without thinking of Hannah Montana...

47. niall1Dawesome Group Title

hey can you check my answer to a question like this

48. tafkas77 Group Title

yes I sure can! :)

49. niall1Dawesome Group Title

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

50. niall1Dawesome Group Title

hehe hannah montana lol

51. niall1Dawesome Group Title

yea i think it is b

52. tafkas77 Group Title

You are absolutely correct. :)

53. niall1Dawesome Group Title

yay lol thx for helping me

54. tafkas77 Group Title

You're welcome! :D

55. niall1Dawesome Group Title

:) everybody makes mistakes everybody has those days 1 2 3 4 lol i had too