Instantaneous rate of change = S'(r) = 8πr
S'(8) = 8π(8) = 64π
Therefore, the instantaneoud rate of change of the <span>surface area with respect to the radius r at r = 8</span> is 64π
3 cups = 1/4
3 divided by 4 is 0.75
So 3/4 of 1 cup spilt on the floor
Total ratio = 4+7 = 11
33/11 = 3
4x3 = 12
7x3 = 21
so the two groups are 12:21
which is also = 4:7
Answer:
a.) 45
b.) 60
c.) 58
d. )77
e.) 135
Step-by-step explanation:
i took the test
, or 8.60
Just use the distance formula