9514 1404 393
Answer:
2πr cm
Step-by-step explanation:
The circumference of a circle of radius r is ...
C = 2πr
For a radius of (r cm), the circumference is ...
A = 2π(r cm) = 2πr cm
For a radius of (2r cm), the circumference is ...
B = 2π(2r cm) = 4πr cm
Then the difference between the circumferences is ...
B -A = (4πr cm) -(2πr cm) = 2πr cm . . . . difference in circumference
Answer:
Improper fraction for 8 4/25 is 204/25
Step-by-step explanation:
The numbers in the mixed fraction are defined as follow
8 = whole number
4 = numerator
25 = denominator
Multiply the whole number by the denominator
8 × 25 = 200
Add the product from Step 1 to the numerator
200 + 4 = 204
Write answer from Step 2 over the denominator
204/25
The mixed number 8 4/25 converted to improper fraction is therefore :
47 students per room, 45 weren’t in a room
Answer:
31%
Step-by-step explanation:
4222÷6101=.69
1879÷6101=.31 is the percent of graduates