A standard STOP sign is 12.4 inches on each side and is in the shape of a regular octagon. What is the sign's approximate area? Show your work for full credit. Round your answer to the nearest tenth if necessary.

20.4

Step-by-step explanation:

Add all of the sides by 12.4

12.4 + 8 = 20.4

86.8

Step-by-step explanation:

you add 12.4 by the number of sides wich is 8

i dont know answer:

step-by-step explanation:

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3