Question

please give me answer and step by step explain ​

Answer 1

Step-by-step explanation:

Q-15 find out the area that the sprinkler can cover with radius 14 m. I. e. pi×r×r

(22×14×14)/7= 616 m^2

As the area covered by the sprinkler is more than the area of garden(370 sq. m) . hence we can say, yes, the sprinkler can cover the complete garden.

Q16 as I m not getting the radius arm. so I m doing it other way. as you have the area of disk. we can calculate the radius of disk.

360= pi×r×r

360/pi =r×r

10.7= r

if the radius of cleaning arm is greater than the disk. it can clean it otherwise not.