56=2(pi)(r)
r=8.9127
pi(8.9127)^2=249.56cm^2
≈245cm^2 (3s.f.)
Answer:
c. 
Step-by-step explanation:
Answer:
The answer is
D. V= 19200- 12t
Step-by-step explanation:
in this problem, we already know that the pool contains 19200 gallons of water
and the pool is draining at 12 gallons per minutes, hence the volume is decreasing at that rate
Therefore for t minutes it will decrease by 12t
hence the volume after t minutes will be
V= 19200-12t
Answer:
Step-by-step explanation:
This is a super question and it is an excellent exercise for you. When I was teaching, once every term, I would ask my physics class to explain acceleration to a 7 year old. The stats favored the older women (mothers) who took the class. Almost none of the guys could do it. Here's why.
- The sentences had to be very short. They were barely 6 or 7 words long. They were complete sentences.
- The examples used had to be very simple. The secret to those mother's answers was they invariably picked something like a stop sign. They all knew that and they always got it right for those reasons.
You are trying to teach a seven or eight year old. Believe it or not, the first thing you have to do is check and see if they know their facts. Can they do 7+8 or 9+ 6 without hesitancy. If they can do those facts do they know the multiplication facts. 4 * 5 etc. They must know those things cold, or you are wasting your time. Don't ask me why. But you can't go on without those 2 fact types solid.
I take it you are trying to do word problems. The best thing you can do is teach them to read.
A man has a dime and a nickel and a penny. How much money does he have? Us a marker to underline the key statement.
a dime,
a nickel
a penny should be underlined. Don't ask for an answer - yet.
======
Keep doing this problem over and over. You are not trying to get an answer. You are trying to get them to understand how to read a question
A person has just less than 4 quarters just less than 5 dimes and just less than 4 nickels. How many coins does he have. That's an important question because the grade three-er is going to have to know what less means.
That should get you started.
Answer7.00000
Step-by-step explanation:
