Question

A circular tunnel of diameter 2m and length 14km is the dug out find the cost of lasting it at rupees 150/100m²

Answer 1

Diameter of tunnel= 2m
Radius of tunnel = 1m
height of tunnel =14km
=14000m
volume of tunnel =πr2h
=22÷7×1×1×14000
=44,000 m2
cost =44000×150÷100
=₹ 66,000