Ella installs lawn watering systems. The radius of sprayed water, r, in metres, can be expressed as

r=0.64A

where A  represents the area watered, in square metres.

Ella has set each sprayer to spray at a radius of 1.2 m. Determine the area of grass watered by one sprayer, to the nearest tenth of a square metre.

3 years ago

Answered By Majid B

r = 0.64 A

A = r / 0.64

A = 1.2 / 0.64

A = 1.9 m^2

---