anton has a rectangular wooden deck that measures 890 cm by 2891 cm that he wants to put a string of lights around. what length of lights should he buy? then anton wants to put an addition to his wooden deck that is 66 cm longer. what length of lights does anton need for the longer wooden deck?

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"

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