What is the total area of the red spots?
Here’s a new geometry problem by MindYourDecisions.
You start with a rectangle that’s 10 by 20 in dimensions. Two corners of the rectangle are connected with a diagonal line. There are also two circles of equal size inside the rectangle that are tangent to each other and tangent to the rectangle.
See if you can find the total area of the red spots.
Give the problem a try; it was supposedly asked to 6th graders in China. Can you figure it out?
There is a second problem in the video by MindYourDecisions below. If you find the solution to the first problem, give the second problem, which is much harder, a try.
You can watch the video for both problems; the solutions are explained towards the end:
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