Estimate the radius of a large windmill's blade ( in meters).

Estimate the area spanned by the windmill's blades (in meters²).

Estimate a typical wind speed entering the large windmill (in meters/sec).

Estimate the power produced by the large windmill (in megawatt).

Estimate the energy used by a typical home in 1 year (in megawatt-hour).

Estimate how many homes this large windwill can service.