What is the best approximation for the circumference of a circle with a radius of 45 cm? use 3.14 to approximate pi 70.65 cm 141.3 cm 282.6 cm 6358.5 cm (:

Circumference of circle is 282.6 cm .

Step-by-step explanation:

Formula

Where r is the radius of the circle .

As given

Radius of a circle is 45 cm .

Putting values in the above

                                                    = 282.6 cm

Therefore the circumference of circle is 282.6 cm .

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

2425

step-by-step explanation: