Mensurationmedium · Past Paper
If the total surface area of a sphere is equal to the curved surface area of a cylinder with same radius, what is the height of the cylinder in terms of its radius?
Ah = r
Bh = 2r
Ch = r/2
Dh = 4r
✓ Correct Answer: B — h = 2r
4πr² = 2πrh => 2r = h.
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