Answer:
1.6 above water
Step-by-step explanation:
Total length of the pipe = length below the water + length above the water
We know the total length of the pipe =3.1 and the length below the water is 1.5 m
3.1 = 1.5 + length above the water
Subtract 1.5 from each side
3.1 -1.5 = 1.5 -1.5 + length above water
1.6 = length above water
Answer:
125 %
Step-by-step explanation:
Computers purchased in the last month = 8
By the middle of the current month, 8 more computers than the last month were purchased. This means, total number of computers purchased by middle of current month = 8 + 8 = 16
Number of computers purchased by end of current month = 2
So,
Total computers purchased by current month = 16 + 2 = 18
We have to find the percentage increase in the number of computers from last month's purchases to the end of this month's purchases. The formula for percentage change is:

Here, Original Value is the number of computers from last month and New Value is the number of computers from current month. Using the values in the formula, we get:

Thus, there was a 125% increase from last month's purchases to the end of this month's purchases
We have two questions, but we need to find the volume of the spherical tank first.
So the formula we will use to find the volume is:
(4/3)πr³=V
Let's fill in the information we have and solve. We will be using 3.14 for pi.
(4/3)(3.14)6³
(4/3)(3.14)(216)
4.1867×216
I'll be using the repeating decimal for 4.1867, I rounded to 7, but there is a repeating 6.
904.32
So the volume is 904.32 yards³ (or 904.78 if using the full pi)
We have to multiply the volume by 7.15.
904.32×7.15
6,465.89
It will cost $6,465.89 to fill the tank with the liquid.