The answer is 30%) because all the angles of a triangle needs to add up to 180 so 180-75-75= 30
V= wlh so the answer is 56.25 or 56 1/4
In one revolution of the wheel, a point on the edge travels a distance equal to the circumference of the wheel.
The wheel has radius 1 ft, so its circumference is 2π (1 ft) = 2π ft.
Then the point has a linear speed of
(1/4 rev/s) * (2π ft/rev) = 2π/4 ft/s = π/2 ft/s