Question

the the area of circle is 81π by CM square find the length of the arc subtending an angle of 300 degree at the centre and also the area of the corresponding sector​

Answer 1

Answer:

arc length=15π

area of the sector=67.5π

Step-by-step explanation:

area of the circle=πr squared=81π

=r squared=81

=r=9

length of the arc=300/360*2*π*r

=300/360*2*π*9

=15πcm

area of the sector=300/360*π*r squared

=300/360*π*81

=67.5πcm squared