Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

penberth Group Title

What is the surface area of a sphere with radius of 3.5? A. 12.25p B. 14p C. 24.5p D. 49p

  • 2 years ago
  • 2 years ago

  • This Question is Open
  1. Tomas.A Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    do you know formula for calculating surface area of a sphere?

    • 2 years ago
  2. penberth Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes but I keep getting 153.94

    • 2 years ago
  3. Tomas.A Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    In all answers there are p, so I guess its \(\pi\)? So you should not write 3.14 instead of it but just keep it.

    • 2 years ago
  4. penberth Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    this is due today and I have no idea what you just said

    • 2 years ago
  5. Tomas.A Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    write down formula of sphere for me

    • 2 years ago
  6. penberth Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    4 pi r 2

    • 2 years ago
  7. Tomas.A Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    ok so \[S=4\pi r^2=4\pi3.5^2=4\pi12.25=49\pi\] and taht's your answer, its D you don't need to use 3.14 instead of \(\pi\) because no one asked you. 3.14 is just approximation of \(\pi\) and for math you need the most accurate result.

    • 2 years ago
  8. penberth Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    thanks but I found it on yahoo answers

    • 2 years ago
  9. Tomas.A Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    do you understand why its not 153.94?

    • 2 years ago
  10. penberth Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    no but who cares

    • 2 years ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.