16inches equates to 406.4mm
406.4 millimeters
1.34 feet
16 inches is 406.4mm
28 square feet.
10inches, 12inches, and 16inches
I believe there are 2.54 cm per inch. so 2.54 times 16= 40.64
25% increase.
8 inches. Radius is ½ diameter.
The area is 201.06 square inches.
The surface area would be 1536in2
4 x 4
16 X pi = about 50 inches.