48. The volume of a sphere of diame...
Question

# 48. The volume of a sphere of diameter 21 cm is (1) 4847 cm3 (2) 4851 cm (3) 1617 cm (4) 5000 cm

11th - 12th Class
Maths
Solution
127
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48. (2) Volume of a sphere ( =frac{4}{3} pi r^{3} ) ( =frac{4}{3} times frac{22}{7} times frac{21}{2} times frac{21}{2} times frac{21}{2}=4851 mathrm{cm}^{3} ) ( left[because text { radius of sphere, } r=frac{21}{2}right] )