MATH SOLVE

5 months ago

Q:
# 4. What is the largest number of identical cubes whose volumes are whole numbers (1,2,3,...) that would fit in a cubewhose volume is 1080 cm3? Show all your work.

Accepted Solution

A:

Answer: The largest number of identical cubes whose volumes are whole numbers that would fit in a cube of volume 1080 [tex]cm^{3}[/tex] is 10.Step-by-step explanation:Given that volume of larger cube is 1080[tex]cm^{3}[/tex]To find number of smaller cube with volume as whole numbers can fit the larger cube:Imagine Rubik's cube of 3x3 as larger volume and one piece of Rubik's cube is smaller cube. On one edge, three smaller cube with volumeIn the same way,Assuming one edge has 'x' number of cube with volume as whole numbersSince, It is cube. Number of cube in other edges will be 'x' tooFor smaller cube,Take one side of smaller cube as xTherefore, One side of larger cube will be nxFor cube, length = height = breath =nxThe volume of larger cube : [tex](nx)^{3} =1080[/tex]nx=10.2598cmwe need to find the "largest" number of cube( i.e n )Therefore, Side x will be smallest and n will be largest.For smallest value of x, It is also said that " volumes are whole numbers " smallest whole number is 1Thus,nx=10.2598cmn=10.2598n is also whole number so that n=10The largest number of identical cubes whose volumes are whole numbers that would fit in a cube of volume 1080 [tex]cm^{3}[/tex] is 10.