Godlovesme
  • Godlovesme
HELP ASAP PLEASE!!!!! :(((((( Pyramid A is a square pyramid with a base side length of 18 inches and a height of 9 inches. Pyramid B has a volume of 3,136 cubic inches. How many times bigger is the volume of pyramid B than pyramid A? Give your answer as a percent. Provide an explanation and proof for your answer to receive full credit.
Mathematics
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SOLVED
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schrodinger
  • schrodinger
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Godlovesme
  • Godlovesme
v= a^2 * h/3 or v= 1/3 * b * h im not sure which formula i have to use :/
Godlovesme
  • Godlovesme
@Nnesha help please :(
Godlovesme
  • Godlovesme
@LegendarySadist help please :))))

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More answers

anonymous
  • anonymous
Does it really matter which formula?
Godlovesme
  • Godlovesme
um you'll get different answer so i guess it does
anonymous
  • anonymous
Not really. a^2 is the same as b. Since a is side length and b is base area. And area of a square is side squared. And 1/3 * h is the same as h/3. In this situation, it would be easier to use the first though imo.
Godlovesme
  • Godlovesme
if u use the first formula, you'll get 972 but if u use the 2nd one they you'll get 54 :/
Godlovesme
  • Godlovesme
then*
anonymous
  • anonymous
Ok. The only difference is that the second formula is used when you have the BASE AREA and the first is used when you have the BASE SIDE LENGTH. The formulas themselves will get you the same thing, the only difference is the amount of steps. In the first formula, you'd just plug in 18 and 9 and calculate, while in the second, you'd find the base (18^2) and then multiply by 3. Both get the same result though.
Godlovesme
  • Godlovesme
ohh so which one do i use in this case? sorry im bad at this .-.
anonymous
  • anonymous
You have the BASE SIDE LENGTH, so you'd use the first.
Godlovesme
  • Godlovesme
okay so it's gonna be 972 cuz v= 18^2 * 9/3 v= 324 * 3 v= 972
anonymous
  • anonymous
Yes. The volume will be 972 in^3
Godlovesme
  • Godlovesme
yay! :) so what's the next step? :)
anonymous
  • anonymous
\[\frac{3136}{972}\] Dividerino
Godlovesme
  • Godlovesme
3.226 since it's asking me for percentage, do i multiply it by 100?
anonymous
  • anonymous
Yeah.
Godlovesme
  • Godlovesme
okay thank you soo much !! i really appreciate your help thanks! :)))
anonymous
  • anonymous
No problem :)
Godlovesme
  • Godlovesme
(:

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