15* 60= 900, so the amount of water is decreased by 900 every hour.
Answer:
69.9 thats it . ur welcome
Step-by-step explanation:
can i get brainliest
Answer:
90
Step-by-step explanation:
You can look at it from 2 perspectives:
1.The angle that is in front of a diameter is always 90°
OR
2. Central angle is twice any inscribed angle subtended by the same arc