How many sq ft in a ten foot circle?

Answer 1

Calculations when converted to SI system of units.

10 feet = 3.048 meters

Formula is S=Pi*R^2

Pi~= 3.14

Ambiguous - ten feet is diameter, radius or length of a circle?

if it's 10 feet radius, then

S=3.14*3.048^2=29.1715546 sq meters or 314 square feet

Assuming it is diameter, radius is would be half of it - 5 feet or 1.524 meter.

S=3.14*1.524^2=7.29288864 sq meters or 78.5 square feet

If it is the length of circle, the formula to get the radius is

r=c/2Pi=3.048/(2*3.14)=0.485350318 meters or 1.59235669 feet

Area then is

S=3.14*0.485350318^2=0.739673884 sq meters or 7.96178342 sq feet