Question

draw and lable a circle that has diameter more than 5 inches,but less than 10 inches. estimate its circumference and them find its circumference using a calculator. compare your results

Answer 1

Using a graph tool
see the attached figure

Let
D----------> the diameters of the circle O
D=8 in
D=8 in is < 10 in  and D=8 in is > 5 in
the center of the circle is the point (0,0)
the circumference of the circle=pi*D-------> 8*pi in

the circumference value estimate is about 24 in
the circumference value using a calculator is ----> 8*pi----> 25.13 in

the difference in the exact value and the estimate value is
 25.13-24--> 1.13 in