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

Ashley is picking apples. She fills two baskets with apples and puts 5 apples in her pockets. The larger basket holds 35 more apples than the smaller one holds.
Divide 5 pounds 8 ounces by 3 ? please show work
what is the junction of the heart
1) A bacterial cell is viewed under a microscope. It doubles every 20 seconds. Which method of reproduction is most likely being viewed? A) Binary fission B) Co
How do I sign up for subscription
HELP!! When would a scientist be most likely to use the type of model shown in the illustration?
Write the equation of a hyperbola with vertices (3, -1) and (3, -9) and co-vertices (-6. -5) and (12, -5). For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Ma
what happen when a.c is passed into the coil of dynamo?​
what is the bmi and the formala to get it
Which problem could be solved with the expression 5 x (3+2)? A - Greg fertilized 3 lawns in the morning and 2 lawns in the afternoon. He did this for 5 days. Ho