On each side of a right-angled triangle, a semicircle is drawn with that side as a diameter.
The areas of the three semicircles are , and where and are both less than .
What is the area of the smallest semicircle ?
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.
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 Kangaroo 2021 (2021)