If you meant cu. in to cu. ft.divide by 1728.
30inches by 30inches
87,120 sq. ft.
No. Two feet equals 24 inches, and 24 inches is less than 30 inches.
8 yards
30" x 30" = 900 square inches.
4 ft equals 1 yard and 1 foot
57 ft 2 inches equals 686 inches.
3 ft * 2.5 ft = 3*2.5 sq ft = 7.5 sq ft
33.05
30inches
76.2 cm