1993 AMC 8 Problem 17
Attempt Problem 17 of the 1993 AMC 8 below, then check your answer against the professionally curated solution from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 1993 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
17.
Square corners, units on a side, are removed from a unit by unit rectangular sheet of cardboard. The sides are then folded to form an open box. The surface area, in square units, of the interior of the box is
Answer: B
Small hint:
Folding does not change area; the interior surface equals the sheet minus the four corner squares
Big hint:
The sheet is subtract four corner squares
Solution:
The interior surface is exactly one face of the cardboard after the corners are removed. The sheet has area and each removed corner has area
So the interior surface area is
Thus, the correct answer is B .
Problem 17 in other years
- 1985 AMC 8
- 1986 AMC 8
- 1987 AMC 8
- 1988 AMC 8
- 1989 AMC 8
- 1990 AMC 8
- 1991 AMC 8
- 1992 AMC 8
- 1994 AMC 8
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