A cylinder has a curved surface area of 2640 cm^2 and radius of 14 cm, what is the height of cylinder? (Take π = \(\frac{22}{7}\))
A. 16cm
B. 20cm
C. 28cm
D. 30cm
The question was asked in examination.
My question is based upon Surface Area of a Right Circular Cylinder in chapter Surface Areas and Volumes of Mathematics – Class 9
The correct choice is D. 30cm
To explain I would say: We know that curved surface area of a cylinder = 2πrh
Curved surface area = 2640 cm^2 and r = 14 cm (given)
Therefore, 2 * \(\frac{22}{7}\) * 14 * h = 2640
h = 30cm.