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Help with the solution.
Regards.
The edge is 6 ft from the centre of the road and 4 ft from the egde of the tunnel.debmalya_dutta wrote:7.5
The width of the traffic lane is 12 ft. So , the road is 6 ft on either side of the centre of the circle. The top of the tunnel is lowest near edges of the traffic lane. height of the roof of the tunnel from the edge of the lane = square roof of (100-36) or 8 . But it is mentioned that a clearance of 0.5 ft is required.
hence the answer = 8-0.5=7.5
KKGMATTER wrote:10²-6² = √64 - dumb question ..but wat formula is this ?