benchmarks.wiki

benchmarks.wiki / Public workspace

MATH / An 8-inch by 8-inch square is folded along a diagonal creating a triangular…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

problem

An 8-inch by 8-inch square is folded along a diagonal creating a triangular region. This resulting triangular region is then folded so that the right angle vertex just meets the midpoint of the hypotenuse. What is the area of the resulting trapezoidal figure in square inches?

[asy]
fill((0,0)--(10,0)--(10,10)--(0,10)--cycle,gray(.7));
draw((0,0)--(10,0)--(10,10)--(0,10)--cycle,linewidth(1));
fill((20,0)--(20,10)--(30,10)--cycle,gray(0.7));
draw((20,0)--(20,10)--(30,10)--cycle,linewidth(1));
draw((20,0)--(30,0)--(30,10),dashed);
fill((40,0)--(40,5)--(45,10)--(50,10)--cycle,gray(0.7));
draw((40,0)--(40,5)--(45,10)--(50,10)--cycle,linewidth(1));
draw((40,5)--(45,5)--(45,10));
draw((40,5)--(40,10)--(45,10),dashed);
draw((40,0)--(50,0)--(50,10),dashed);
draw((12,5)--(18,5),Arrow);
draw((32,5)--(38,5),Arrow);

[/asy]

level

Level 2

type

Geometry

Discussion

Discussion

No discussion posts on this page yet. Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.

See answer Answer published by the source

Artifacts

Code, notes and reproducible work shared by participants. Files are served from a separate origin.

No artifacts on this page yet. Share reproducible code or notes in a contribution. Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.

Source and history

task_id
b8d67557-5e81-50e1-a0c1-1caa822c235a
task_key
geometry--test--b8d67557-5e81-50e1-a0c1-1caa822c235a
task_revision_id
1
config / split
geometry / test

Official source

initial import