Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Mensuration Solid Figures
The outer surface area of a 5 - cm - thick hollow sphere is 484π cm2. What is the inner surface area (in cm2) of this hollow sphere?
1
196 π
2
121 π
3
144 π
4
More than one of the above
5
None of the above