Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Mensuration Plane Figures
The inner and outer radii of a circular track are 21m and 28m respectively. The cost of levelling the track at Rs. 5 per m2 is: (Use π = \(\frac{22}{7}\))
1
Rs. 1078
2
Rs. 2156
3
Rs. 4312
4
Rs. 5390