The cylinder base diameter is 4 dm. find the area of the lateral surface of the cylinder if its height is 2.5 dm.
| September 12, 2021 | education
The radius of the circle at the base of the cylinder is: R = AD / 2 = D / 2 = 4/2 = 2 dm.
Determine the circumference at the base of the cylinder.
С = 2 * π * R = 2 * π * 2 = 4 * π dm.
Let us determine the area of the lateral surface of the cylinder.
S side = C * AB = 4 * π * 2.5 = 10 * π dm2.
Answer: The lateral surface area is 10 * π dm2.
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