The finished thickness of a tabletop is 24". Bill has just planed the board down to 2 5/16". How much does he have to sand off to reach the final dimension (in decimal form)?



Answer :

To find out how much Bill has to sand off to reach the final dimension, we need to follow a step-by-step process:

1. Identify the initial and planed thickness:

The initial thickness of the tabletop is [tex]\( 24 \)[/tex] inches.

2. Convert the planed thickness to decimal form:

The planed thickness given is [tex]\( 2 \frac{5}{16} \)[/tex] inches. To convert this fractional form to a decimal, you need to perform the division.

[tex]\[ 2 \frac{5}{16} = 2 + \frac{5}{16} \][/tex]

Here’s a detailed breakdown of the fractional part:

[tex]\[ \frac{5}{16} = 0.3125 \][/tex]

So,

[tex]\[ 2 \frac{5}{16} = 2 + 0.3125 = 2.3125 \][/tex]

3. Calculate the difference between the initial thickness and the planed thickness:

To find out how much more sanding is needed, subtract the planed thickness from the initial thickness.

[tex]\[ 24 - 2.3125 = 21.6875 \][/tex]

Therefore, Bill has to sand off [tex]\( 21.6875 \)[/tex] inches to reach the final dimension of 24 inches.