Question

A wind turbine has three equally spaced blades that are each 131 feet long. What is the measure of the arc between any two blades?

Answer 1

274.23 feet

Explanation:

From the question,

The measure of the arc between any two blades (s) = 2πrΦ/360

s = 2πrΦ/360................... Equation 1

Where Ф = angle formed betwen two blades, r = length of each blade.

Given: Ф = 360/3 (the three blades are equally spaced) = 120°, r = 131 feet.

Constant: π = 3.14

Substitute these values into equation 1

s = (2×3.14×131×120)/360

s = 274.23 feet.

Hence, the measure of the arc between any two blades is given = 274.23 feet