There are three elements in that set.
The answer for this problem is 4
<h2>
Answer:</h2>
The value of t is:
t=48.8889
<h2>
Step-by-step explanation:</h2>
We are asked to solve the linear equation in terms of variable t.
The equation is given by:

Firstly we will solve the parentheses term in the left and right hand side of the equality as follows:

Now we combine the like terms on the left side of equality by:

Now we subtract both side of the equation by 5 to get:

Now on dividing both side of the equation by 0.90 we get:

Hence, the value of t is: 48.8889
Answer:
V≈434.89
Step-by-step explanation:
V=4/3πr^3
plug the numbers in and you get 434.89