Let $\omega$ be a complex number such that $\omega^7 = 1$ and $\omega \ne 1.$ Compute \[\omega^{16} + \omega^{18} + \omega^{20} + \dots + \omega^{54}.\]

Let w be a complex number such that w^7 = 1 and w does not = 1.
Compute w^16 + w^18 + w^20 + ... + w^54

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)