The curved surface area of a cylinder 5cm high ... - JAMB Mathematics 2024 Question
The curved surface area of a cylinder 5cm high is 110cm2. Find the radius of its base
π = (\frac{22}{7})
A
2.6cm
B
3.5cm
C
3.6cm
D
7.0cm
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Correct Option: B
The curved surface area of a cylinder is given by the formula:
CSA = 2πrh,
where r is the radius and h is the height. Given that CSA = 110 cm2 and h = 5 cm, and using \(π = \frac{22}{7}\), we can solve for r:
110 = 2 * \(\frac{22}{7}\) * r * 5
110 = \(\frac{220}{7}\) * r
r = \(\frac{110 * 7}{220}\) = 3.5 cm.
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