If volume and Surface area of a sphere is numerically equal, then its radius is
a) 2 units (b) 3 units (c) 4 units
(d) 5 units
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Answer:volume of sphere＝surface area of sphere
＝ 4/3/\r3＝ 4/\r2
＝r＝3
option(b) 3units
Step-by-step explanation:
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