Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Mensuration Solid Figures
Find the total surface area of a cone of slant height '2l' and radius 'r/2'.
1
πr (l + r)
2
2πr (l + r)
3
2πrl
4
More than one of the above
5
None of the above