Answer:
I think it's 5 triangle are needed to make star
You want to do Soh Cah Toa
I'm assumig you meant ?=pi
so the area of the sector would be the area of the circle times the fraction of the circle that is
the fraction of the circle would be degrees/360 since 360 degrees in a circle
and area of course is pir^2
so
r=8
degrees=120
so
area=pi8^2 times 120/360
area=64pi times 1/3
area=64pi/3
I think you mean 64/3 pi in²
so D is the answer
You could multiply that fraction by (1 hour / 3,600 seconds) .
(18,000 mile / 1 hour) x (1 hour / 3,600 second) =
(18,000 x 1) / (1 x 3,600) (mile-hour) / (hour-second) =
(18,000 / 3,600) (mile / second) = <span>5 mile/second
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