Henk Reuling

@PuzzleADayBlog I think it's 7 (but I'm not 100% sure that 6 could not be possible)

Puzzle: Five Friends, Five Secrets #puzzle #puzzles #puzzleaday

@dment37 Area = 20

Blue area?

@zainbs359 Area = 729/50 · √19

Area of the rectangle = ?

@arjanvandermeij @SvdK @volkskrant Rudy Kousbroek schreef in 1990 al in het boek "Einsteins poppenhuis", in het essay getiteld 'kunstmatige domheid', waarin hij oa zegt "ongeletterdheid is niet salonfähig, ongecijferdheid helaas wel". Helaas is dit alleen maar verslechterd.

@dment37 8 × sqrt(7)

Blue area? #geogebra

@dment37 radius = -50+30√3 (area = π·radius² = ... easy)

Blue area? #geogebra

@GeometryPuzzles @rmtnezcalafat 135°

Geometry challenge: 99 percent fail this geometry problem #geometry

@GeometryPuzzles @rmtnezcalafat 135°

@Math_World_ 2 × depth = 12.5 + 8.25 = 20.75 → depth = 10.375 cm

First question of the new year! What is the depth of the hole?

@PuzzleADayBlog The first ship, at 2 times speed 35 km/hr

The Two Ships Puzzle #Puzzle #Puzzles #PuzzleADay

@Math_World_ radius = 85/4

Good question. What is the radius of the quarter circle?

@diegorattaggi The long way... only using Pythagoras: blue : yellow = 3 : 2

Geometry puzzle based on an older one. #mathiratti

@diegorattaggi 1/3

Geometry puzzle. #wfis #mathiratti

Puzzle: A Number Maze #Puzzle #Puzzles #PuzzleADay

@diegorattaggi radius outer circle = 6, then radius biggest green circle (right green one) = 2 and radius left green circle = 1. With several times Pythagoras: radius smallest circle = 6/7; etc.

4 years ago. #mathiratti

@engineers_feed 256

Mathematical puzzle. Find the area of the square.

@Mirangu1 @puzzlist Fraction = 1/6

A square with two right angles. What fraction is yellow? mirangu.com/tip-of-the-vei… Inspired by @puzzlist

#6622444858" target="_blank" rel="nofollow noopener">digit.party/#6622444858

@mathssolutionz 18-3√11

@diegorattaggi Area = 2

4 years ago. #mathiratti