Explanation:
We are given the period P of a pendulum and we are asked to find its length L. We can use the formula P=2π√(L/32) to solve for L:
P = 2π√(L/32)
Squaring both sides, we get:
P^2 = 4π^2(L/32)
Simplifying, we get:
L = (P^2*32)/(4π^2)
Now, substituting P=3 into the formula, we get:
L = (3^2*32)/(4π^2) ≈ 9.58 feet
Therefore, the length of the pendulum with a period of 3 seconds is approximately 9.58 feet (rounded to the nearest hundredth).