提款机:Math problem

来源：百度文库 编辑：高考问答 时间：2024/05/09 09:41:59
a pond 100 feet in diameter is surrounded by a circular grass walk which is 2 feet wide. The number of square feet of grass on the walk is.....

3.14x((100+2x2)/2)^2-3.14x(100/2)^2

math problem math problem Math problem math problem math problem math problem think about math problem A Math Problem!!~~~~ a math problem in english Math Problem, Welcome To Answer?!