Lower limit for H is given as = 7/10*(220-a) where a is the age of the person
a. We have to calculate the lower limit for a person whose age is 47
We substitute the age "a" = 47 in the above equation to calculate the lower limit .
Lower limit = 7/10*(220-47)
Lower limit = 7/10*173
Lower Limit = 1211/10 = 121.10 = 121 beats/minute (since we cannot have fractional beats)
Lower limit of the heart range in beats per minute = 121 beats/minute
The formula for the circumference of a circle is C = 2pi*r, where r is the radius. Here, 7850 units = C = 2pi*r.
Dividing 7850 units by 2pi, we get
7850 units
r = ----------------- = 1249 units (to the nearest unit)
2pi
I think 95,0000 and 50,0000
2 plus 1 is 3
1/4 plus 1/4 is 1/2
Both recipes would be 3 1/2 cups
5 cups minus 3 1/2 cups would leave him with 1 1/2 cups extra