Please i need help ASAP please no links. A chord is units from the center of a circle. The radius of the circle is units. What is the length of the​ chord?

PLZ MARK BRAINLIST

Draw a line from the center of the circle to the chord to form a right triangle.

The radius (20) forms the hypotenuse of the right triangle and distance from the center to the chord (16) forms a leg.

Use the Pythagorean Theorem to find the length of the other leg x (which would be 1/2 the length of the chord):

x^2 + 16^2 = 20^

x = 12

So the entire chord length = 12 * 2 = 24 units

The object hits the ground 8 seconds after launch.

Step-by-step explanation:

Let , where is the height of the object above the ground, measured in feet, and is time, measured in seconds. We notice that given expression is a second-order polynomial and hence, there are two roots, one of them corresponding to the instant when the object hits the ground. If , we get the following expression:

(Eq. 1)

Roots are found by applying the Quadratic Formula:

or

Only the first root offer a solution that is physically reasonable. Thus, the object hits the ground 8 seconds after launch.