A square, a rectangle and two semicircles, one of which is centered in the shared vertex. What is yellow : blue?
Categories
Unity
Tag: rectangle
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Brick oven II
A rectangle inside a square. What fraction is yellow in terms of x?
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Ball pit II
The left wall of a rectangular pit can slide frictionlessly along the floor. An inward force of F is needed to maintain the position of the 6 congruent circles, but a larger force G is needed to push the walls inward, lifting the circles. What is G/F?
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In and out II
A couloured triangle and rectangle with extended sides and two circles. Prove that the triangle and the rectangle have equal areas.
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Side touches
Four triangles in a rectangle. The three red triangles have equal areas. What is blue : red?
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Equal partition
A rectangle and a square with an extended side. Prove that their areas are equal.
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Roll the dice
Two squares inscribed in a rectangle. What fraction is purple?
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Ticker tape
Three overlapping congruent rectangles of area X. What is purple-yellow+2*green?
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The pyramid chambres
Two rectangles inside an equilateral triangle. What fraction is red?
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Rectangular justice
Purple and blue rectangles with line KL connecting their centers. What is the area ratio Green:Orange?