Find the volume. Round to two decimal places if necessary.

9514 1404 393

  28.27 cubic units

Step-by-step explanation:

The volume is given by the formula ...

  V = πr²h

Here, the radius (r) is half the diameter, so is 1.5. The height (h) is 4, so the volume is ...

  V = π(1.5²)(4) = 9π

Using the "pi button" on the calculator, the volume is ...

  V = 28.27 cubic units

If you use 3.14 for π, you get 28.26 cubic units.

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

80% of the cookies

step-by-step explanation: