The pickup time of an answering machine is set at 5 rings, but the machine picks up after 4 rings. What is the relative error

What is the volume of a rectangular prism that is 120 centimeters by 2 meters by 1.5 meters in cubic meters?

Type the correct answer in each box, round your answers to the nearest integer 20 25 30 in the figure, the perimeter of hexagon abcdef is approximately w units, and its area is square units

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle