What is the area of a regular nonagon with 10 cm sides and an apothem of 6 cm?

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The polygon contains 9 identical isosceles triangles each with area 30.

Step-by-step explanation:

The area of each isosceles triangle is 2 * (1/2)*6*5.

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents