Answer: 88 in2
Step-by-step explanation:
The side of the can, which when "unrolled" is a rectangle, with width = height of the cylinder (7 in); and length = Circumference = 2π radius
Surface area of the curved surface of the can = 2π (diameter/2) x height
Replacing with the values given:
S = 2π (4/2) x 7 = 2π (2) x 7 = 88 in2
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