If 2r = h + √r2 + h2 then the ratio r : h (r ≠

2r = h + √r² + h²
⇒ 2r – h = √r² + h²
On squaring both sides,
4r² + h² – 4rh = r² + h²
⇒ 3r² = 4rh
⇒ 3r = 4h

⇒	r	=	4
	h		3

= 4 : 3