Connecting the dots

Three squares share three vertices which form a right triangle. Their centres are connected to form another triangle of which one side is given. What’s the blue area?

Scroll down for a solution to this problem.


The blue area is 18.

Solution by Dr Rick.


Connect the dots
You need perseverance
And tolerance
Put your heart
Put your soul
Into work
And into all
Just draw the line
And follow it too
From all the others
Until to you
Watch them every day
Without fear
Don’t look away
Just do your best
You surely know
One day you’ll go


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