A circumference of 12.57 cm
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Circumference equals 2 x the radius x pi. 4(2) = 8 So, the circumference is 8 pi. However, if you want to calculate the actual value, multiply those two together and you get roughly 25.1.
It is the diameter which is twice the radius giving a length of 8 cm
4 cm = 1.575 inches
Yes (apart from units):If the side of a square is 4cm then itsperimeter is 4cm + 4cm + 4cm + 4cm = 4 x 4cm = 16cm;area is 4cm x 4cm = 16cm2
If your shape is a rectangle then your y=30cm