A protractor is a device used for measuring, drawing, and laying out angles.

Write the supplement of 121°48’51”.

Using the diagram, determine the minimum diameter for DIA B.

How many significant digits are in the number 5,000,000?

Using the diagram, determine the maximum clearance.

Using the diagram, determine the minimum diameter for DIA A.

Divide the following measurement numbers and round the answer to the same number of significant digits as the least accurate number:  20,000 ÷ 0.549

Compute the absolute error if the true or actual value is 7.15 in and the measured value is 7.02 in.

Multiply the following measurement numbers and round the answer to the same number of significant digits as the least accurate number:  24.9 × 0.54

Express 3.8 short tons as pounds.  Round the answer to the same number of significant digits as in the original quantity.