railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Mensuration Solid Figures
A hemispherical bowl has a radius of 7 cm. It is to be painted from inside as well as outside. Find the cost of painting it at the rate of Rs.40 per 20 cm2? (Take thickness of the bowl as negligible).
1
Rs. 1,232
2
Rs. 1,125
3
Rs. 1,432
4
Rs. 1,550