The epxression pie2 gives the area of a circle with the radius r. How many square meters of wheat were destryoed when an alian ship made a crop circle of diameter 25 meters in the wheat field at the southwind Ranch? find pie on the calculater?
The epxression pie2 gives the area of a circle with the radius r. How many square meters of wheat were destryoed when an alian ship made a crop circle of diameter 25 meters in the wheat field at the southwind Ranch? find pie on the calculater?