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anonymous

  • one year ago

Geometry? Answer what you can

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  1. anonymous
    • one year ago
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    OK

  2. anonymous
    • one year ago
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    http://prntscr.com/7a9ecl 1 http://prntscr.com/7a9eey 2 http://prntscr.com/7a9ehd 3 17.A rectangular pyramid fits exactly on top of a rectangular prism. The prism has a length of 18 cm, a width of 6 cm, and a height of 9 cm. The pyramid has a height of 15 cm. Find the volume of the composite space figure. (1 point) 504 cm3 1,512 cm3 1,620 cm3 2,592 cm3 18.radius of 70 m (1 point) 4,900 pi m2 19,600 pi m2 9,800 pi m2 14,700 pi m2 19. A spherical balloon has a circumference of 21 cm. What is the approximate surface area of the balloon to the nearest square centimeter? (1 point) 1,385 cm2 561 cm2 346 cm2 140 cm2 21.What is the volume of the sphere? Round the answer to the nearest cubic unit. R= 16 cm http://prntscr.com/7a9evd http://prntscr.com/7a9eza 24.What is the scale factor of a cube with volume 1,331 ft.3 to a cube with volume 85,184 ft.3? 121:1,936 1:64 4:1 1:4

  3. anonymous
    • one year ago
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    Do I post my answers? I got 1:4 I just need clarification

  4. is3535
    • one year ago
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    17 is 1,512 cm3

  5. is3535
    • one year ago
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    18 is 19,600 m2

  6. anonymous
    • one year ago
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    Thank you!! :)

  7. anonymous
    • one year ago
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    #19 sphere surface area =4*pi* r^2 circumference of 21 cir= 2* pi* r => r=21/(2*pi) area= 4*pi (21/(2*pi))^2= 4 *pi *21^2/pi^2/4=21^2/pi

  8. anonymous
    • one year ago
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    # 21 volume = 4/3*pi* r^3= 4/3*pi *(16)^3=

  9. anonymous
    • one year ago
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    17157.284679

  10. anonymous
    • one year ago
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    # 22 18--> 3 24---->4 so 18/3=6 24/4=6

  11. anonymous
    • one year ago
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    so 1:6 ?

  12. anonymous
    • one year ago
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    yes

  13. anonymous
    • one year ago
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    # 23 do as 22

  14. anonymous
    • one year ago
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    Also I didn't get 21, can you clarify? by the way thank you so much I appreciate this a lot! I've been stuck on this for a few hours and it's been annoying. I suck at geometry

  15. anonymous
    • one year ago
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    21 asking about the voulem and the radius is given the equation is =4/3 * pi * r^3

  16. anonymous
    • one year ago
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    * Volume

  17. anonymous
    • one year ago
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    thank you! and for 23 I got 1:2.4 Is that right?

  18. anonymous
    • one year ago
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    you are right

  19. anonymous
    • one year ago
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    # 24 ?

  20. anonymous
    • one year ago
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    http://prntscr.com/7a9pib

  21. anonymous
    • one year ago
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    WHEN U GUYS R DONE DO U MIND HELPING ME CHECK MY ANSWERS

  22. anonymous
    • one year ago
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    it's 1 am for me and I'm trying to do my work, I'll try if simple.

  23. anonymous
    • one year ago
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    IT IS grade seven work

  24. anonymous
    • one year ago
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    # 24 85,184 /1331

  25. anonymous
    • one year ago
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    Oh okay B, that makes sense

  26. anonymous
    • one year ago
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    yes

  27. anonymous
    • one year ago
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    I'm calculating 21 still and end up with B. Is that right? I ended up rounding.

  28. anonymous
    • one year ago
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    i don't know what is B

  29. anonymous
    • one year ago
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    nvm I got it, it was c. I see what I did wrong.

  30. anonymous
    • one year ago
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    are these correct? http://prntscr.com/7a9sr5

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