Step-by-step explanation:

1. Area: pi x r^2
Radius: 6.9m
Area: 3.14 x 6.9^2
Area: 149.5m
2. Area: pi x r^2
Radius: 150ft
Area: 3.14 x 150^2
Area: 70,650ft
3. Area: pi x r^2
Radius: 8in
Area: 3.14 x 8^2
Area: 200.96in
Area: pi x r^2
Radius: 2in
Area: 3.14 x 2^2
Area: 12.56in
200.96/12.56 = 16
Therefore, it will take 16 4 inch diameter cookies to equal the area of one giant cookie.
Answer:
1 5/12 lb
Step-by-step explanation:
This is a subtraction problem.
He started with 4 2/3 lb and used 3 1/4 lb, so you need to subtract 3 1/4 lb from 4 2/3 lb.
Notice that the fractions do not have the same denominator, so we need a common denominator and equivalent fractions.
We start with the
subtraction below
4 2/3
- 3 1/4
---------------
The least common denominator of 3 and 4 is 12. 12/3 = 4, and 12/4 = 3, so we get equivalent fractions with the common denominator 12.
We use the LCD to get
the subtraction below
4 8/12
- 3 3/12
----------------
Now we subtract the whole numbers and the fractions.
4 8/12
- 3 3/12
----------------
1 5/12
Answer: 1 5/12 lb