19.7" * 19.7" = 388.09 sq inches= 388.09/144 = 2.70 sq ft approxSo to cover 420 sq ft you will require 420/2.70 = 155.84 = 156 tiles.However, that is the mathematical answer and assumes that the shape is "well-behaved" and that there is no wastage (almost all offcuts are used).19.7" * 19.7" = 388.09 sq inches= 388.09/144 = 2.70 sq ft approxSo to cover 420 sq ft you will require 420/2.70 = 155.84 = 156 tiles.However, that is the mathematical answer and assumes that the shape is "well-behaved" and that there is no wastage (almost all offcuts are used).19.7" * 19.7" = 388.09 sq inches= 388.09/144 = 2.70 sq ft approxSo to cover 420 sq ft you will require 420/2.70 = 155.84 = 156 tiles.However, that is the mathematical answer and assumes that the shape is "well-behaved" and that there is no wastage (almost all offcuts are used).19.7" * 19.7" = 388.09 sq inches= 388.09/144 = 2.70 sq ft approxSo to cover 420 sq ft you will require 420/2.70 = 155.84 = 156 tiles.However, that is the mathematical answer and assumes that the shape is "well-behaved" and that there is no wastage (almost all offcuts are used).
420 centimeters = 165.354331 inches
420 inches = 11.6666667 yards
420 inches=35 feet
420 centimeters is equal to 166.007905 inches
12 inches = 1 foot, so 500 inches = 41 feet 10 inches.
19.7" * 19.7" = 388.09 sq inches= 388.09/144 = 2.70 sq ft approxSo to cover 420 sq ft you will require 420/2.70 = 155.84 = 156 tiles.However, that is the mathematical answer and assumes that the shape is "well-behaved" and that there is no wastage (almost all offcuts are used).19.7" * 19.7" = 388.09 sq inches= 388.09/144 = 2.70 sq ft approxSo to cover 420 sq ft you will require 420/2.70 = 155.84 = 156 tiles.However, that is the mathematical answer and assumes that the shape is "well-behaved" and that there is no wastage (almost all offcuts are used).19.7" * 19.7" = 388.09 sq inches= 388.09/144 = 2.70 sq ft approxSo to cover 420 sq ft you will require 420/2.70 = 155.84 = 156 tiles.However, that is the mathematical answer and assumes that the shape is "well-behaved" and that there is no wastage (almost all offcuts are used).19.7" * 19.7" = 388.09 sq inches= 388.09/144 = 2.70 sq ft approxSo to cover 420 sq ft you will require 420/2.70 = 155.84 = 156 tiles.However, that is the mathematical answer and assumes that the shape is "well-behaved" and that there is no wastage (almost all offcuts are used).
420 mm = 16.5 inches
420 centimeters = 165.354331 inches
420 centimeters = 165.354331 inches
420 inches = 11.6666667 yards
420 inches=35 feet
420 centimeters is equal to 166.007905 inches
420 Calculations: 140yd (3ft/1yd)= 420 ft
12 inches = 1 foot 420 inches = 35 feet.
1 US gallon = 231 cubic inches 420 US gallons = 97,020 cubic inches
420 ft = 128m