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

The number 6 is halfway between 4.5 and 7.5.Answer the missing numbers below.The number 6 is halfway between 2.8 and .......The number 6 is halfway between -12
Why does a pendulum eventually stop swinging?
a piece of wood is 180cm long, Tom cuts it into three pieces in the ratio 2:3:4 Work out the length of the longest piece
A box contains bags of crisps. Each bag of crisps weighs 25 grams. Altogether, the bags of crisps inside the box weigh 1 kilogram. How many bags of crisps are i
What is 2.333333 in fraction form
Genetic crosses Question:A brown coat is dominant to a white coat in cattle.  A farmer has a brown bull.  How would you determine whether the bull is a heteroz
What is a tonal collage? We learnt it in school BUT  I can't remember.
How do you do this algebra question
How many light sources do you know Pls list them
How is carbon dioxide obtained?