Question $3.$A$.$ Estimate how much collector area would be required for an active solar hot$-$water system designed to supply the total needs for two four$-$person families, one living in Manchester, New Hampshire, where the latitude is $44+$o north. The heat capacity of water is about $4200$ J$/$kgoC and the hot water supply temperature in both houses is $60$oC $(140$oF$).$ Provide your answer in m$2.$