Question

The volume of a pyramid that fits exactly inside a cube is 49 cubic feet. What is the volume of the cube?

Answer 1

would it be 49x6?

Answer 2

pleaaseee help

Answer 3

you need to know the formula for the volume of a cube and pyramid first

Answer 4

i dont know those :\

Answer 5

would it be v=1/3(b)(H)

Answer 6

and the cube is (b)(h)?

Answer 7

hold on i will get the formulas for you... hahahaha i dont even remember XD

Answer 8

haha okay thank you :)

Answer 9

volume of a cube: V=a^3

Answer 10

what is A?

Answer 11

the edge

Answer 12

pyramid: lwh divided by three

Answer 13

but we only have the volume

Answer 14

and six pyramids fit perfectly into a cube

Answer 15

three pyramids

Answer 16

not six

Answer 17

oh my school taught me six

Answer 18

so it would be 49 times 3

Answer 19

147?

Answer 20

the pyramid fits exactly,

Answer 21

Yup!

Answer 22

so its a square pyramid

Answer 23

yeah! okay i think i understand lol

Answer 24

yes samantha is right

Answer 25

@TylerD AWWW thank you! no one really gives me the credit like that thanks! @sicklefirebolt you are welcome!

Answer 26

@Samantha1lehman do you think you could help me with one more question? haha

Answer 27

yeah sure! just warning you im only in middle school but i will definitely try and help

Answer 28

well you seem smarter than me, so im trusting you :P

Answer 29

Pyramid A is a square pyramid with a base side length of 7 inches and a height of 6 inches. Pyramid B has a volume of 3,136 in3. How many times bigger is the volume of pyramid B than pyramid A?

Answer 30

15

32

54

75

Answer 31

so remember the formula i gave you?

Answer 32

for the volume of the pyramid?

Answer 33

yeah

Answer 34

pyramid: lwh divided by three

Answer 35

so the length and width is 7

Answer 36

so it's 7x7x6?

Answer 37

then...

Answer 38

divided by 3

Answer 39

is 98

Answer 40

yes

Answer 41

so 98 cubic in

Answer 42

so volume of A is 98 and Volume B is 3136

Answer 43

how many A's would fit into B's?

Answer 44

so divide 3136 by 98

Answer 45

32! thank you so much

Answer 46

Yeah!

Answer 47

you are welcome! just tag or message me when you need help!