At a school carnival, the diameter of the mat of a trampoline is 12 feet and the diameter of its metal frame is 14 feet. What is the length, in feet, of the metal frame that surrounds the trampoline? Use 3.14 for π and round your answer to the nearest tenth.

The length, of the metal frame that surrounds the trampoline is 44.0 feet.

Step-by-step explanation:

Given:

At a school carnival, the diameter of the mat of a trampoline is 12 feet and the diameter of its metal frame is 14 feet.

Use 3.14 for π.

Now, to find the length, in feet, of the metal frame that surrounds the trampoline.

As given, diameter is 14 feet.

So, radius (r) =

Now, to get the length of the metal frame we put formula of circumference:

So, rounding into nearest tenth = 44.0 feet.

Therefore, the length, of the metal frame that surrounds the trampoline is 44.0 feet.

44.0 feet

Step-by-step explanation:

b

step-by-step explanation:

b

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".