2015年AMC8试题及分析.pdf

2015 AMC 8 Problems/Problem 1 How many square yards of carpet are required to cover a rectangular floor that is feet long and feet wide? (There are 3 feet in a yard.) Solution First, we multiply to get that you need square feet of carpet you need to cover. Since there are square feet in a square yard, you divide by to get square yards, so our answer is . Solution 2 Since there are feet in a yard, we divide by to get , and by to get . To find the area of the carpet, we then multiply these two values together to get . See Also 2015 AMC 8 (Problems • Answer Key • Resources (/Forum/resources.php?c 182cid 42year 2015)) Preceded by Followed by First Problem Problem 2 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 A ll AJHSME/AMC 8 Problems and Solutions The problems on this page are copyrighted by the Mathematical Association of America ()s American Mathematics Competitions (). Placement:Easy Geometry Retrieved from /wiki/index.php? title 2015_AMC_8_Problems/Problem_1oldid 80323 Copyright © 2016 Art of Problem Solving 2015 AMC 8 Problems/Problem 2 Point is the center of the regular octagon , and is the midpoint of the side What fraction of the area of the octagon is shaded? Contents 1 Solution 1 2 Solution 2 3 Solution 3 4 See Also Solution 1 Since octagon is a regular octagon, it is split into equal parts, such as triangles , etc. These parts, since they are a