SSC NTA Delhi University Non-Teaching 2021 Mock Test Quantitative Aptitude Mensuration Solid Figures
The height of a solid cone is 40 cm and the radius of its base is 30 cm. What is the cost of painting the total surface area of the cone of the rate of Rs 7 per cm2?
1
Rs 48,800
2
Rs 56,800
3
Rs 62,800
4
Rs 52,800