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

Nancy_Lam

Eight cubes,each with an edge of length one inch,are positioned together to create a large cube. What is the difference in the surface area of the large cube and the sum of the surface areas of the small cubes? A) 24 in^2 B) 16 in^2 C) 12 in^2 D) 8 in^2 E) 0 in^2

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. mathandphysics
    Best Response
    You've already chosen the best response.
    Medals 3

    A cube itself has 6 sides, each with surface area of 1 (L x W which are each 1) So each cube has an area of 6 in^2. 8 cubes, so 48 in^2 In the mega-cube, each cube only shows 3 of its sides. Therefore, each cube only has 3 in^2 represented. 8 cubes, 3x8 =- 24. 48 - 24 = 24 in^2

    • 2 years ago
  2. mathandphysics
    Best Response
    You've already chosen the best response.
    Medals 3

    so, A

    • 2 years ago
  3. jim_thompson5910
    Best Response
    You've already chosen the best response.
    Medals 0

    Surface area of large cube = 6*2^2 = 24 square inches Surface area of small cube = 6*1^2 = 6 square inches Sum of small cubes surface area = 6*8 = 48 square inches ----------------- So the difference is 48 - 24 = 24 square inches So the answer is A

    • 2 years ago
  4. Nancy_Lam
    Best Response
    You've already chosen the best response.
    Medals 0

    ty

    • 2 years ago
  5. Nancy_Lam
    Best Response
    You've already chosen the best response.
    Medals 0

    small cube = area ? large cube= area?

    • 2 years ago
  6. mathandphysics
    Best Response
    You've already chosen the best response.
    Medals 3

    The surface area of each small cube is 6 in^2. There is 8 of them. So that's 48 in ^2.

    • 2 years ago
  7. Ishaan94
    Best Response
    You've already chosen the best response.
    Medals 0

    Large cube area surface = 24 small is 6

    • 2 years ago
  8. mathandphysics
    Best Response
    You've already chosen the best response.
    Medals 3

    Surface area of large is 24 in^2

    • 2 years ago
  9. jim_thompson5910
    Best Response
    You've already chosen the best response.
    Medals 0

    the surface area of the large cube is 24 square inches the surface of one small cube is 6 square inches

    • 2 years ago
  10. Nancy_Lam
    Best Response
    You've already chosen the best response.
    Medals 0

    ok, I get now,ty

    • 2 years ago
  11. starfish33
    Best Response
    You've already chosen the best response.
    Medals 0

    A

    • 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.