I am having some trouble solving a basic area equation. I have the values and the answer but am unable to recreate it myself. This is a problem as I need to apply the same equation to solve my own values (smaller 2's indicate squared, I couldn't find the symbol for this, nor for pi):
Area (km2) = pi(D/d)2
Where D= 2.5, d=0.5. The answer I have for this is 4.9 km2.
The equation I need to solve is for:
Any help would be appreciated. I have tried a combination of things like pi x (D/d2), the squared inside and outside the bracket but am getting nowhere...
Thanks in advance,