Answer: ok 28 times 28 gves 784 .
69 times 69 gives 4,761 .
Step-by-step explanation: HOPE IT HELPS YOU . THANKS .
<span>Diameter :D , Raduis : R
D = 2R
R = 1.4 angstrom
1 angstrom = 0.00000001 cm = 10^-7
cm
R = 1.4 * 10^-7 cm
D = 2.8 * 10^-7 cm</span>
Answer:
Option C is the answer 2.10
Step-by-step explanation:
F = 29^2/20^2 = 2.1025
She spent 90% because $1.00 would be 100% and $0.80 would be 80% so $0.90 equals 90%