You would need 358 tiles.
16 x 16 = 256 sq in = 1.777 sq ft 420/1.777 = 237 tiles approximately
420 millimeters is 42 centimeters.
420 inches = 11.6666667 yards
420 inches=35 feet
420 m = 459.317 yd
420. Get 450 to be safe.
A 24x24 tile is 4 square feet. You would need 105 of them.
16 x 16 = 256 sq in = 1.777 sq ft 420/1.777 = 237 tiles approximately
There are 136 tiles in a double 15 set.
420
420 ft = 128m
There are 420/7 = 60
420 decimeters is 4200cm
420 / 7 = 60
420 mm = 16.5 inches
420 centimeters is 13.78 feet.
420 feet = 128.016 meters.