Mathematical shape law

Let the radius of the inscribed circle of the three graphs be r 1, r2, r3 respectively, with the following laws:

For three graphs with the same area, their inscribed circle radii meet the following requirements: r1>; r2 & gtr3 .

The radius of the inscribed circle of a square, a circle and a triangle r 1, r2 and r3 satisfy the following relationship: r2 = r 1/√2, r3 = r 1/( 1+√3).

The complete set of mathematical stories is grade three.

What are the basic properties of math grades 4-6?

Hengshui advanced mathematics examination questions.

The fourth grade math problem is that the first grade math problem is that the bridge length is 4600 meters, the train length is 160 meters, and the train is 30 meters per second. How long does it tak

Mathematics 4 daquan

I remember there used to be a Japanese drama, which seemed to say that a lawyer helped a group of students with poor grades to get into the University of Tokyo. what was the name?

Math rational number addition and subtraction problem (with negative number) in the first day of junior high school.

Math 2086 in the second grade of primary school has () (), () () and () ().

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The ancestral surname is "Mou".