Answer:
0.6 seconds to 2.6 seconds
Step-by-step explanation:
From the graph the ball reaches 28 feet after 0.574 seconds
and doesn't fall below that until 2.614 seconds
0.574 rounded is 0.6 seconds
2.614 rounded is 2.6 seconds
y b g
/ \ / \ / \
h t h t h t
soooo 6 outcomes
First
angle in front of c is 30°, so hypotenuse is equal to 2c
it's right triangle, so let's use Pythagorean theorem\

Second
b - the base of the triangle, angles at the base are equal ⇒ cathets are equal
it's right triangle, so let's use Pythagorean theorem

Step-by-step explanation:
Find the area using a proportion.
A / (πr²) = θ / 360°
A / (π (20 ft)²) = 160° / 360°
A ≈ 558.5 ft²