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First drilled to a depth of 1 47/64 how much deeper must it be drilled to reach the depth indicated?

First Drilled To A Depth Of 1 4764 How Much Deeper Must It Be Drilled To Reach The Depth Indicated class=

Sagot :

Answer:

  1 13/64

Explanation:

The depth of the hole is the height of the block less the remaining material below the hole:

  depth = 1 3/8 +1 15/16 - 3/8 = (1 3/8 -3/8) +1 15/16 = 2 15/16

We want to find the difference between this depth and the depth of the hole already drilled:

  2 15/16 -1 47/64 = 2 60/64 -1 47/64

  = (2 -1) +(60 -47)/64 = 1 13/64

The hole must be drilled 1 13/64 deeper to match the drawing.