railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Mensuration Solid Figures

Find the total surface area of a hemispherical bowl of thickness 'd' and internal radius 'r'.

1
4πr2 + 6πrd + 3d2
2
π(4r2 + 6rd + 3d2)
3
4πr2 + 4πrd + 3d2
4
π(4r2 + 3rd + d2)
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