Please show me the step on how to do this. I know the answer but how do you get it. This is the third time I've asked and all I get are straight answers, please help me correctly. A rectangular garden with a 4-feet wide cement sidewalk is shown. The cement for the sidewalk is 1 foot deep. What volume of cement is needed for the sidewalk? A) 96 cubic feet B) 120 cubic feet C) 192 cubic feet D) 240 cubic feet