Susan's backyard is in rectangle with dimensions 38 yd by 73 yd. carlos's backyard is rectangle with dimensions 26 yd by 52 yd. how many more square yard does susan's backyard have than carlos's

I'm terrible at math any here is appreciated.

Use the squared identities to simplify sin^2x cos^2x

Mr. roseanne will buy 12 1/2 pounds beef for for a cookout. the price for the first 3 pounds of beef is $4.99 per pound. after that, the price is $4.49 per pound. how much will mr.roshan pay for the beef