NEED ASAP !!
Will mark the brainliest answer

option 1

Step-by-step explanation:

40ft is radius

first lets find the area of the whole circle

A=pi*r^2

A=pi*40^2

A=pi*1600

A=5026.54824574 ft^2

now, lets find what part of a circle is 80 degrees

80/360=2/9

now lets multiply the total area by the fraction to find what area is actually getting sprinkled

A=5026.54824574*(2/9)

A=10053.0964915/9

A=1117.01072128

A= around 1117.01 ft^2

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s

b, i believe, but not sure.