The circumference of a circle with radius 1 is divided into four equal arcs. Two of the arcs are 'turned over' as shown.
What is the area of the shaded region?
Select one option, then click Submit.
1
\sqrt{2}
\frac{1}{2}\pi
\sqrt{3}
2
Select an option, then submit.
Sign in or create an account to reveal answers, view the solution, and save your progress. Create a free account to unlock practice and keep track of your work.
Senior Mathematical Challenge 2016 (2016)
One puzzle per day. Cryptarithm, Magic Square, Summit. No sign-up required to play.
Play daily puzzle →Interactive problems and curated lessons—water pouring, magic squares, knight's tour, and more.
Browse library →See how you rank. Top solvers by problems solved correctly. Sign in to climb the ranks.
View leaderboard →Senior Mathematical Challenge 2016 (2016)