alyssa3193
alyssa3193 alyssa3193
  • 01-12-2018
  • Mathematics
contestada

A sector of a circle has a central angle of 45 . Find the area of the sector if the radius of the circle is 15 cm.

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 01-12-2018

Answer:

A = 28.125 * pi cm^2

A = 88.357  cm^2


Step-by-step explanation:

Area of a sector is 1/2 r^2 theta  where theta is in radians

convert 45 degrees to radians

theta = 45 * pi/180 = pi/4

A = 1/2 * 15^2 * pi/4

A =1/2 * 225 * pi/4

A = 28.125 * pi cm^2

A = 88.357  cm^2


Answer Link

Otras preguntas

Algebra Level: High School
Divide and show your work 9 1/6 - 5/6 =
please help me with this part... will give 20 points <3
17 18 19 20 21 22 23 24 which ones are prime numbers​
in of the electron cloud in each element's atoms. One way in which elements differ from each other is the structure of tl In has n electron cloud, an electron t
How do rural roads differ from roads in cities or suburbs?
Consider the following code: color = input("What color? ") if (color == "green"):   print ("Correct") else:   print ("Nope") elif (color == "red"):   print ("Co
GUYS CAN SOMEONE PLEASE HELP.... PLEASE I REALLY NEED THIS ASAP! SORRYY :( GOD BLESS TO WHOEVER HELPED:)
8. Draw Inferences. Raphael's painting The School of Athens shows a gathering of thinkers, scientists, and artists that included Plato, Aristotle, Socrates, Ave
Associez les activites