The volume of a pyramid that fits exactly inside a cube is 9 cubic feet. what is the volume of the cube? . a. 3 cubic feet. b. 6 cubic feet. c. 18 cubic feet. d. 27 cubic feet.

don't know what that says sorry i can't you

step-by-step explanation:

idk what it says

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step-by-step explanation:

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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