The curved surface area of a cylinder 5cm high is 110cm2. Find the radius of its base π = 227
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.