Final answer:
To find the circumference 'c' of a circle with radius 'r' of 7 units and pi approximated as 22/7, we use the formula c=2πr, yielding a circumference of 44 units.
Step-by-step explanation:
The question is asking to find the value of 'c' given the formula c = 2πr where π (pi) is approximated as 22/7 and the radius 'r' is given as 7.
To solve for 'c', we plug the given values into the formula:
c = 2 × (22/7) × 7
Now, to solve for 'c', we simplify:
c = (44/7) × 7
c = 44 (as 7 cancels out the 7 in the denominator)
Therefore, the circumference of the circle 'c' is 44 when the radius is 7 and π is approximated as 22/7.