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The area of a circle is 12.56 square centimeters. There is a square in the circle. Find the square area
12.56 △ 3.14 = 4 √ 4 = 2cm (radius) 2 + 2 = 4cm (diameter)
According to the Pythagorean law, if the two adjacent sides of a right triangle are 1, then the hypotenuse is 1.4142, and the opposite hypotenuse is 1.4142
It's 1.4142, and the two adjacent sides are the law of 1. The diameter of this circle is 4cm, and 4cm is two positive edges
The hypotenuse of a right triangle. 4 has several 1.4142, which is the side length of a square
4 △ 1.4142 ≈ 2.8283cm (square side length)
Square area = side length × side length 2.8283 × 2.8283 ≈ 8 square centimeter
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