One link in a chain was made from a cylinder that has a radius of 2 cm and a height of 20 cm. how much plastic coating would be needed to coat the surface of the chain link? use 3.14 for π. 251.2cm2 314 cm2 345.4 cm2 471 cm2

answer:

the answer to your question is:

step-by-step explanation: area = 251.2 cm²

data

radius = 2 cm

height = 20 cm

π = 3.14

area

rectangle = base x height

perimeter = 2πr

                = 2(3.14)(2)

                = 12.56 cm

rectangle = (12.56 x 20)

                  = 251.2 cm²

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

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