The figure shows a medicine wheel, which is a Native American structure. This circular structure is perhaps 2500 yr old. There are 27 aboriginal spokes in the wheel, all equally spaced. (Type an integer or a simplified fraction.) The central angle in radians is approximately 2x 27 (Simplify your answer. Type an exact answer in terms of x. Use integers or fractions for any numbers in the expression.) (b) If the radius of the wheel is 71.0 ft, find the circumference. 446.1 ft. (Round to the nearest tenth as needed.) (c) Find the length of each arc intercepted by consecutive pairs of spokes. 16.52 ft. (Do not round until the final answer. Then round to the nearest hundredth as needed.) (d) Find the area of each sector formed by consecutive spokes.