Question

A road roller has length 2.1 m and diameter 1 m . How .many rotations will be required to level a ground of area 660 sq.cm. ? *
2 points​

Answer 1

Step-by-step explanation:

=2.1m,d=1.4m⟹r=0.7m

n=500

Area covered=2nπ×r×l

=2×500×0.7×2.1π=4620m

2

Cost of travelling =4620×7=Rs.32,340