If 4r = h +√r2 + h2 then r : h is ? (r ≠ 0)

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4r = h + √r² + h²
⇒ 4r − h = √r² + h²
On squaring both sides,
(4r – h)² = (√r² + h²)²
⇒ 16r² + h² – 8rh = r² + h²
⇒ 16r² – r² = 8 rh ⇒ 15r² = 8rh

⇒ 15r = 8h ⇒	r	=	8
	h		15