Mathematics · Mensuration
A hollow spherical vessel has external and internal radii of 10.5 cm and 7.7 cm respectively. What is the mass (in kg, rounded off to the nearest tens) of the sphere if it is made of metal of density 10.3 g/cm3? (Take π = 22/7)
- 125
- 228
- 330✓
- 432
Correct answer
30
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