2017
Mathematics
JAMB
The curved surface area of a cylinder 5cm high is 110cm2. Find the radius of its base π = 22/7
A.
2.6cm
B.
3.5cm
C.
3.6cm
D.
7.0cm
Correct Answer: 3.5cm
Explanation
Curved surface area of cylinder = 2πrh 110 = 2 × 22/7 × r × 5 r = (110×7)/(44×5) = 3.5cm
Curved surface area of cylinder = 2πrh 110 = 2 × 22/7 × r × 5 r = (110×7)/(44×5) = 3.5cmTHIS WEEK's
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