Two congruent circles and a right triangle inside a semicircle. What fraction is blue?
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The birdwatcher
Tag: area
Categories
The hammock
A square inscribed in a triangle. Two areas are given. What is the square’s area?
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The cleaver
Four squares, a rectangle and a circle. What is the proportion brown : grey?
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The green field
A square is divided in two quadrilaterals of given area. What fraction of the square’s perimeter is red?
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Ice cube
A rectangle and a square. What is the proportion purple : blue?
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The hourglass
A rectangle with two crossing line segments. What’s the minimal shaded fraction?
Four quarter circles of radius 1, each containing a square. What is the blue area?
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Below the tree line
A triangle is split in two. What is the area of the green quadrilateral in terms of lengths a and b?
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The ramp
A right triangle is split in two. What is the maximum yellow fraction?
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The headphones
A unit square, a semicircle, a right triangle and an isosceles triangle. What is the total purple area?