To find the volume of a sphere, you use the equation:
4π(r³/3)=V
The radius is half of the diameter.
60÷2=30
Let's plug it in.
4π(30³/3)
12.5663706(9,000)
113,097.335≈113,097 in³.
Answer:
4/-7
Step-by-step explanation:
14-10/2-9=
4/-7
Answer:
20.2 m
Step-by-step explanation:
considering it's a closed shape, which it is, add up all the values.
Answer:
(52.30 ; 52.62)
Step-by-step explanation:
Given :
Sample size, n = 20
Mean, xbar = 52.46
Standard deviation, s = 0.42
We assume a t - distribution
The 90% confidence interval
The confidence interval relation :
C.I = xbar ± Tcritical * s/√n
To obtain the Tcritical value :
Degree of freedom, df = n - 1 ; 20 - 1 = 19 ; α = (1 - 0.90) /2 = 0.1/2 = 0.05
Using the T-distribution table, Tcritical = 1.729
We now have :
C.I = 52.46 ± (1.729 * 0.42/√20)
C. I = 52.46 ± 0.1624
C.I = (52.30 ; 52.62)
