Respuesta :

A: 100m^2

10 x 10 = 100

B: 28.274m^2

You have to do pi x r squared
So,,,

Pi x 3^2

9pi = 28.274....

C: just subtract the grass bed from the land...

100 - 28.274 = 71.72566612...

So C is 71.726m^2

Hope this helped! Have a nice day :)