someone please help me with this if one person already answers then dont answer i only have a few points left and need it for school

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet

What’s the answer ? use the picture to see the problem