A sandbox has an area of 706 cm, with a width of75 cm. What is the simplified exact length of this sandbox? When the expression 35(250 + 8) + 3/200 is simplified, it takes the form of ab + c10. What is the value of a + b - c? A farmer uses circle irrigation to water his crop. In this method of irrigation, a long arm sweeps about the centre of the circle, spraying crops as it passes. The radius of sprayed water, r, in metres is given by the formula: r = 0.318A If the radius of the irrigation system is 472 m, what is the area being sprayed, rounded to the nearest metre?