The volume of the cylinder is 45п cm3, and the base area is 9п cm2. Find S side
April 4, 2021 | education
| The lateral surface area of the cylinder is S = 2 * π * r * h.
Hence, we need to find the height and radius of the base of this cylinder.
As you know, the volume of a cylinder is V = S * h, where S is the base area, h is the height of the cylinder.
From the task data, we can find the height of the cylinder.
h = V: S,
h = 45 * π / 9 * π = 5 (cm).
The base area of the cylinder is:
S = π * r².
This means that the radius of the base of this cylinder is:
9 * π = π * r²,
r² = 9,
r = 3 (cm).
Thus, the area of the lateral surface of a given cylinder is equal to:
S = 2 * π * 3 * 5 = 30 * π (cm²).
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