Answer:
7.2*10^3.
7,200 in scientific notation, is 7.2*10^3
The TV is 45 inches tall.
Step-by-step explanation:
The diagonal length of television = 53 inches
Width of TV = 28 inches
As TV is in rectangular or square shape, a diagonal will form a right triangle
Where,
Diagonal = hypotenuse = c = 53 inches
Width = base = b = 28 inches
Length = perpendicular = a
we will use pythagorean theorem to find the length.

Taking square root on both sides

The TV is 45 inches tall.
Keywords: triangle, square root
Learn more about square root at:
#LearnwithBrainly
General Idea:
The measure of one of the central angles of a regular Polygon (
) can be used using the below formula:

Applying the concept:
The measure of one of the central angles of a regular octagon.
The octagon have 8 sides, using the above formula we get...

Conclusion:
The correct option is <em><u>A) 45 degrees</u></em>