It is: 104*pi inches
If d = 33, then c = 104
104 million inches.
There are 2.54 centimetres in one inch. Therefore, 104 inches is equal to 104 x 2.54 = 264.16 centimetres.
104 sq feet = 104*12*12 square inches which will require 104*12*12/(4*8) = 468 bricks.
You will need at least 17 30-inch tiles to cover 104 square feet. Each tile covers 6.25 square feet so you divide 104 by 6.25 which gives you 16.64 tiles. Add more tiles to allow for extras in case of damage to tiles during installation.