Determine the circumference of a circle with a radius of 6.8. round your answer to the tenths place.

42.73

Step-by-step explanation:

2*pi*r = 2*pi*6.8=42.73

42.7

Step-by-step explanation:

Formula for Circumference of a circle is C=2πr

π=3.14

radius/r=6.8

C= 2*3.14*6.8

C=42.704

Round to 42.7

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.