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

Erica went shopping for new clothes for school. She bought a pair of jeans for $70.19 and several shirts for $8.63 each. If x represents the number of shirts sh
Which one? Everyone was home for the holidays. what could make for ___________ Christmas than that? a. a merryer b. a merrier c. the merriest
Does jupiter have any volcano
which is not found in dry air
Find the difference. 6E6 - 2E5 =
Which measurement is greater 1 yard or one meter
A fossil found under a layer of rock is usually _____.
What muscle moves urine through your urinary system?
39x10^3 in standard form
Which disease produces too much of mucus?