75 sq ft = 6.97 square metres
75 acres = 3,267,000 square feet.
75 ft * 125 ft = 9375 sq ft = 870.966 sq metres
1 sheet of 12 ft x 12 ft will cover 144 sq ft. More than enough.
233.5 sq ft
7ft 5 * 150 ft = 75/12 ft * 150 ft = 89/12 ft * 150 ft = 89 *12.5 sq ft = 1112.5 sq ft
43,560 x .75 = 32,670 sq ft.
The attic area of your 30 x 75 home is 2250 sq ft. / 40 = 56 1/4 packages. Be sure to deduct for covered areas you will not be insulating.
breadth = 1740/75 = 23.2 feet
1076.391042 sq. ft.
19681.81 sq ft
5220.5 sq ft