railway RRB ALP (CBT 1 + CBT 2 + CBAT) Mock Test Series 2025 (New) Quantitative Aptitude Mensuration Solid Figures
The lateral surface area of a frustum of a right circular cone, if the area of its base is 16π cm2 and the diameter of the circular upper surface is 4 cm and slant height 6 cm, will be
1
30π cm2
2
48π cm2
3
36π cm2
4
60π cm2