The curved surface area of a cylinder 5cm high is \(110\text{cm}^2\). Find the radius of its base \(\pi = \frac{22}{7}\)

Assessment: JAMB UTME - Mathematics - 2017 Subject: General Mathematics

Question 1 Report

The curved surface area of a cylinder 5cm high is \(110\text{cm}^2\). Find the radius of its base

\(\pi = \frac{22}{7}\)

Answer Details
The curved surface area of a cylinder is given by the formula 2πrh, where r is the radius of the base and h is the height of the cylinder. We are given that the cylinder is 5 cm high and its curved surface area is 110 cm². Therefore, 2πrh = 110 Substituting the value of π as 22/7, we get: 2 x 22/7 x r x 5 = 110 Multiplying both sides by 7/22 and simplifying, we get: r = 3.5 Therefore, the radius of the base of the cylinder is 3.5 cm. Hence, the correct answer is option (B) 3.5cm.

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