Use 3.14 for π round answers to the nearest hundredth if necessary
calculate the area of circle x if the diameter is 13 inches
square inch
calculate the radius of a circle if the circumference is 138.16 mm
millimeters

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.