a training field is formed by joining a rectangle into semicircles, The rectangle is 87m long and 57m wide. What is the length of a training track running around the field? ( use the value 3.14 for π, and do not round your answer )

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42