The height of chandmari road is to be raised , so, 30 cuboidal holes with equal depth and of equal measure are dug out on both sides of the road and with this soil the road is elavated .If the length and breadth of each hole are 14 m and 8m respectively and if the total quantity of soil required to make the road be 2520 cubic metre, then calculate the depth of each hole.

Explanation

The length and bradth of each hole is 14 meres and 8 metres respectively.
Let the depth of each whole be x metres = 12 x cu-metres.
`therefore` the volume of 30 holes `=112 x xx 30 ` cu-metres
As per question, `112 x xx 30 =2550` or, `x =2550/(112 xx 30 )=0.75 `
Hence the depth of each hole ,=0.75 meters.