Aconsumer charges a $2,530.16 purchase on their credit card. the card has a daily interest rate of 0.042%. if the consumer pays off the balance at the end of 30 days, how much more in interest will they pay for the purchase?
radius = 5 in
using the formula for calculating the area (a) of a circle
a = πr² ( r is the radius )
here a = 78.5, hence
3.14r² = 78.5 ( divide both sides by 3.14 )
r² = = 25 ( take the square root of both sides )
r = = 5
3 hours and 20 minutes
you do 150/45 which is about 10/3 hours.
turn it into hours and minutes which is 3 hours and 20 minutes
the answers you get for zeros are - 8 1 and - 6.
i'm not sure what you are looking for.