The simplified answer would be 14x+17y-11
Answer: 25 faces
Step-by-step explanation:
Given
6 cubes are stacked over each other
Mr. Smith wants to count the number of faces
The faces which are in contact with each other are not visible to Mr. smith i.e. there will be 5 cubes with only 4 faces available and only one cube with 5 faces available, that is placed on the top.
No of visible faces
![\Rightarrow 4\times 6+1\quad \quad [\text{6 cubes with 4 faces visible+face of top cube}]\\\Rightarrow 25\ \text{faces}](https://tex.z-dn.net/?f=%5CRightarrow%204%5Ctimes%206%2B1%5Cquad%20%5Cquad%20%5B%5Ctext%7B6%20cubes%20with%204%20faces%20visible%2Bface%20of%20top%20cube%7D%5D%5C%5C%5CRightarrow%2025%5C%20%5Ctext%7Bfaces%7D)
9514 1404 393
Answer:
about 19.92 meters
Step-by-step explanation:
The circumference is ...
C = πd
72 m = πd . . . . . for outer diameter d
d = (72 m)/π
The inner diameter is 3 meters shorter, so is ...
inner diameter = (72/π) m - 3 m ≈ 19.92 m