The diagram shows a 16 metre by 16 metre wall. Three grey squares are painted on the wall as shown.
The two smaller grey squares are equal in size and each makes an angle of 45° with the edge of the wall. The grey squares cover a total area of metres squared.
What is the value of ?
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 2018 (2018)