Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
The volume of a square based pyramid is 81 cubic meters. What is the volume of the cube with the same side length and height?
A)9m3
B)27m3
C)243m3
D)729m3
moderator help
 2 years ago
 2 years ago
The volume of a square based pyramid is 81 cubic meters. What is the volume of the cube with the same side length and height? A)9m3 B)27m3 C)243m3 D)729m3 moderator help
 2 years ago
 2 years ago

This Question is Closed

amistre64Best ResponseYou've already chosen the best response.0
the volume of the base?
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
The volume of "a square based pyramid" is 81 cubic meters. What is the volume of "the cube" with the same side length and height? thats better
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
the volume of any pointy shape is: (1/3) (base area) (height) to wit; 81 = (1/3) (base area) (h) ; multiply thru by 3 3(81) = s^2 * h ; s^2 refers to the square base area, divide out the h. 243/h = s^2 ; now square root each part sqrt(243/h) = s
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
hmmm, prolly still not reading it correctly; cube tends to mean a shape with sides and height being equal, but this might mean a cube like shape in general
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
if height = side length we get sqrt(243/s) = s 243/s = s^2 243 = s^3 s = cbrt(243) .... might be a better interpretation but its hard to tell with the way it is written
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
the volume would then be cbrt(243)^3 = 243m^3 which is prolly the right answer
 2 years ago
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
 Engagement 19 Mad Hatter
 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.