Still begging? OK. Let's do it with algebra first then put in the numbers.
We're given the Circumference of a circle C, and we want the area A.
The radius is related to the circumference by
C = 2π r
The area is related to the radius by
A = π r²
Solving for r in the first equation,
r = C/(2π)
So the area is
A = π ( C/(2π) )² = πC²/(4π²) = C²/(4π)
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OK we're given C=25 1/7 inches, π≈22/7
C = (7×25 + 1)/7 = 176/7 = (22×8)/7
That's a little convenient.
A = C²/4π = ( (22×8)/7 )² / (4 (22/7) ) = (8²/4) (22/7) = (16*22)/7 = 352/7
After those nice numbers they want an approximation. How disappointing.
A = 50.2857142857 sq inches
Answer: 50.29
Answer:
16
Step-by-step explanation:
by expanding the bracket you'd have -41x+16
Answer:
100 or 60
Step-by-step explanation:
Since the question does not specify whether 
refers to only the girls or all students, both will be calculated for your convenience.
If 2/3 refers to all students:
150*
=100
If 2/3 refers to the girls:
150*
*
=150*
=60
Answer:
No
Step-by-step explanation:
Reduce each fraction to find if they are equal to the same ratio.
2/4 reduces to 1/2
14/20 reduces to 7/10
They do not form a proportion.
Answer:
0 and 1
Step-by-step explanation:
0-1=-1
0+1=1
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