A clock is shown. The hour hand is at 9 and the minute hand is at 12. What is the sector area created by the hands of a clock with a radius of 9 inches when the time is 4:00? 6.75π in.2 20.25π in.2 27π in.2 81π in.2

Respuesta :

Answer:

27 pi in.2

Step-by-step explanation:

answer on edg 2020

The area created by the clock when it's at 4:00 is 84.83in^2

Data;

  • radius = 9 inches
  • angle = ?

Area of a Sector

The area of a sector is given as

[tex]A = \frac{\theta}{360} * \pi r^2[/tex]

But we don't know the angle, we can find this by using the total number of hours present in a clock

[tex]\frac{12}{360} = 30^0[/tex]

This shows that for every hour, the clock is subtended at 30 degrees.

In four hours, the clock will be 4 * 30 = 120 degree

Let's substitute this into the equation and solve

[tex]A = \frac{\theta}{360} * \pi r^2\\A = \frac{120}{360} * 3.142 * 9^2\\A = 84.83in^2[/tex]

The area created by the clock when it's at 4:00 is 84.83in^2

Learn more on area of a sector here;

https://brainly.com/question/22972014