求教一道数学JJ

chantelle

    

1.      DS: (General meaning, not accurate) There are one garden and four
water faucet, can the four water faucet cover the whole garden?

    

2.       

    

1)     
The garden is 32 square
centimeters.

    

2)     
The radius is 2 centimeters.

    

C  花园为边长4倍根号2的正方形，等分为4个小正方形，每个水龙头外切每个小正方形，刚好覆盖。

    

怎么算出来正好每个水龙头外切每个小正方形的呢？多谢！