Current location - Training Enrollment Network - Mathematics courses - The Pythagorean Fiona Fang in Zhao Shuang is a big square composed of four congruent right triangles with a small square in the middle (
The Pythagorean Fiona Fang in Zhao Shuang is a big square composed of four congruent right triangles with a small square in the middle (
A.

Test analysis: ∵ The area of the big square is 25, and the area of the small square is 1.

∴ The sum of the areas of the four right triangles is 25 ∴ 1 = 24, that is, 4× ab=24.

That is, 2ab=24, a 2 +b 2 =25,

∴(a+b) 2 =25+24=49。

So choose a.