if volume of hemisphere and surface area of hemisphere are numerically equal then find the diameter of the hemisphere
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2/3pie r^3 = 2pie r^2
now r/3 = 1
or r = 3
thus diameter = 2 ×r
so , d = 2×3
=6
now r/3 = 1
or r = 3
thus diameter = 2 ×r
so , d = 2×3
=6
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