The amount of decrease is (80 - 64) = 16
The fraction of decrease is the fraction of the original amount that disappeared.
That fraction is (16 / 80) = 1/5 = 0.2
To change a decimal to a percent,
move the decimal point 2 places that way ==> .
0.2 = 20%
Answer:
B
Step-by-step explanation:
They are all cousins.
The answer is B I think (the picture is a little hard to see)
Answer:
Step-by-step explanation:
The purple circle, not ring is pi 7 squared = 153.93804
Then subtract the smaller circles area (pi 4 squared) = 153.9... - 103.6725576 =
50.2654824
Purple ring is 50.2654824
The entire circle is 4+3+3 (10) squared times pi = 314.1592654
( 50.2654824 / 314.1592654 ) x 100 = 15.999999998 %
