A training held is formed by joining a rectangle and two semicircles, as shown below. The rectangle is 85 m long and 53 m wide. What is the length of a training track running around the held? (use the value 3.14 for it, and do not round your answer. Be sure to include the correct unit in your answer.)

7,9,11

Step-by-step explanation:

Let first number is x, second number is (x+2) and third number is (x+4).

ATQ,

The product of the smaller two integers is 3 less than 6 times the largest integer.

x(x+2) = 6(x+4)-3

x² + 2x = 6x+24-3

x² + 2x = 6x+21

x² + 2x -6x -21=0

x²-4x -21=0

It is a quadratic equation whose solution is :

x = -3 and x = 7

First number = 7

Second number = 9

Third number = 11

Hence, this is the required ssolution.