1. Estimate the percentage of the electrical energy needs of an average family that can be supplied by a

photovoltaic system installed on the rooftop of the family home. The solar panels of the system cover half

of the roof of the family home. Assume:

Also,

Note,

A rectangular foundation 40x28 ft in dimensions

55° roof incline on the half holding the solar panels.

The half includes a1-ft-long hanger extension.

All the electricity generated can be directly used (applied towards the need).

Panels do not stretch over the boundaries of the inclined roof surface.

List all other assumptions you are making.

Explain your approach.

There is no right or wrong. The solution should make sense in practical terms.

55°