the radius is 5 in
the area of a circle is given by the formula
a = pi *r^2
we know the area = 78.5 in^2 (volume would be in^3 area is in^2)
78.5 = 3.14*r^2
divide each side by 3.14
78.5/3.14 = 3.14/3.14*r^2
25 = r^2
take the square root of each side
about 18 days.
the problem states that a blueberry plant produces about 26 blueberries per day. so, our answer will be somewhat of an estimate for the amount of days the plants produced blueberries based on the number picked. in order to solve for the number of days, we can set up equivalent ratios (fractions):
where 'd' = number of days.
we can cross-multiply and divide in order to find the amount of days:
so, d ≈ 18 days.