13. A hole is drilled in a block of wood as shown in the sketch. The hole is 3/4 of the total depth of the wood. The total depth of the block of wood is 13/16 in.

How deep is the hole?

Hole

The depth of hole is 0.609 inches.

Given, the total depth of the block of  wood is   inches.

Since the hole is of the total depth, so the depth of the hole will be,

Or,

Hence the depth of hole is 0.609 inches.

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yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;