SOLUTION: Crop circles. The expression πr2 gives the area of a circle with radius r. How many square meters of wheat were destroyed when an alien ship made a crop circle of diameter 25

Algebra.Com
Question 350224: Crop circles. The expression πr2 gives the area of a circle with radius r. How many square meters of wheat were destroyed when an alien ship made a crop circle of diameter 25 meters in the wheat field at the Southwind Ranch? Round to the nearest tenth. Find π on your calculator.
Found 2 solutions by rfer, checkley77:
Answer by rfer(16322)   (Show Source): You can put this solution on YOUR website!
3.14*12.5^2=490.6
Answer by checkley77(12844)   (Show Source): You can put this solution on YOUR website!
A=PIR^2
A=3.14(25/2)^2
A=3.14*12.5^2
A=3.14^156.25
A=490.6 METERS^2 IS THE AREA.

RELATED QUESTIONS

25 meters and {{{I have looked to see if I can get help and do not see this anywhere. I... (answered by Earlsdon)
The expression πr2 gives the area of a circle with radius r. How many square meters... (answered by rfer)
I need help with this question: The expression Pi r^2 gives the area of a circle with... (answered by Nate,Chris435435)
From Textbook: The expression of "pie"r^2 gives the area of a circle with radius r. How... (answered by solver91311)
The expression _r2 gives the area of a circle with radius r. How many square meters of... (answered by stanbon)
The expression pie(r square gives the area of a circle with radius r. How many square... (answered by Nate)
1)If the sum of the areas of two circles with radii r1 and r2 is equal to the area of a... (answered by edjones)
Recall that the area of a circle, A, (in square inches) is determined by the formula... (answered by vleith)
S = 4πr2 , for r2 (surface area of a sphere with radius r) Thank... (answered by Fombitz)