Answer:
21
Step-by-step explanation:
To find the area of a cylinder you mutliply radius by height.
r*h = 162
If we know the height is 7.7, substitute it for <em>h.</em>
r*7.7 = 162.
Or:
162 / 7.7
Which gives you 21.03, or 21.
Answer:
45 miles/hour
Step-by-step explanation:
We need the speed in miles per hour so we need to changes minutes to hours
20 minutes * 1 hour /60 minutes = 1/3 hour
Speed = distance/ time
= 15 miles/(1/3 hour)
=15 *3 miles/hour
= 45 miles /hour
The answer should be 6a-18 .
-
that's the subtraction sign
Do 31÷3= 10 Remainder 1
So it goes into 10 times.