A training field is formed by joining a a rectangle and two semicircles, as shown below. The rectangle is 89 m long and 69 m wide. What is the length of a training track running around the field? (Use the value 3.14 for {pi symbol}, and do not round your answer. Be sure to include the correct unit in your answer.)

I have no clue this queshtion seems pretty hard.

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".

are you an artist's daughter? cuz dang you a fine piece of art, girl.