16 x 3.14 = 50.24
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The surface area is equal to the (circumference of the base) times (the length). Circumference of the base = (2 pi) times (radius) = 16 pi Surface area = (16 pi) times 20 = 320 pi = 1,005.310 square units (rounded to 3 decimal places)
It will be diameter times pi or 3.14 or 3
Circumference of a circle is the diameter times pi or 2pi times the radius. Given the diameter, circumference = 16 times pi. So, the circumference is 16pi or 50.265
If 75% = 48*pi then 100% = 64*pi Radius = 8 inches Circumference = 16*pi inches
4 cm because pi*42 = 16 pi cm2