how many inches are used if 6"x15" are used out of a 60"x120" sheet?
60 x 120 =7,200 square inches
6 x 15 =90 square inches are used. If you want the percentage used, then:
90 / 7,200 =0.0125 x 100 =1.25% was used out of 7,200 sq.in.
