A water sprinkler has a range of 5 meters. The jet from the sprinkler sweeps out at an angle of 85 degrees as the nozzels turns. What is the area watered by the sprinkler? use the value pi=3.14 and round to the one decimal place.

Question

anonymous · Answer

attachment

anonymous · Answer

@eliassaab can you help please!!!

anonymous · Answer

$$
25 \pi 
$$
is area of the whole circle.

anonymous · Answer

$$
\frac { 25 \pi}{360} \times 85
$$
is the area in question.

anonymous · Answer

I need to find out how many meter covered. 
my choices are 
15.6
17.8
18.5
I'm not sure how to find that???

anonymous · Answer

85/360 * 3.14(0.5)^2
0.1853
18.5
can this be right???

anonymous · Answer

Sorry, I made a miscalculation. Here is the right one
$$
\frac{25 (3.14) (85)}{360}=18.5347
$$

anonymous · Answer

can you help me on the other one I posted. I did it the same way but got it wrong. :/