30 x 18 = 540 square inches.
540 square inches converts to 3.75 square feet.
67.5
480
24 inches = 2 ft 30 inches = 2.5 ft 2 ft x 2.5 ft = 5 square feet.
It is the same as 12 x 30 * 30 which is 8640.
There are approximately 0.43511 psi in 30 millibars.
12 inches = 1 foot Thus the tiles would be 1 foot square. You therefore need 30 to cover a 30 square foot room.
0.00068870524 acre 2.7870912 square meter 4,320 square inch 0.00068870524 acre 2.7870912 square meter 4,320 square inch
Multiply the two dimensions to get the area. In this case the calculations gives you 1200 square inches, divide by 144 to get 8.33 square feet.
The answer depends on the shape of the 30 square feet area. If it is in the form of a strip that is 5 inches wide and 72 feet long and you don't want mosaics with little offcuts, then you will require 144 tiles.
Tire pressure? Pounds per Square Inch?
A square with a 30-inch diagonal measurement has sides of 21.21 inches in length.
30" is the Diameter ~ 18.75*pi = 58.905 sq. ft.30" is the Circumference ~ 18.75/pi = 5.968 sq. ft.