Find the area of a regular octagon with a side length of 12cm.

Steps:

Shape: Regular octagon

Solved for area

Side length= 12cm

A=2(1+√2)a2

Description:

Using the formula A=2(1+√2)a2 for area and  Regular octagon, we calculate the side length that is 12 cm. After you calculate your answer will equal as A≈695.29cm². Since it says to round to the tenth, your answer will equal as 695.3 after rounding.

A≈695.29cm²

Round to the nearest tenth =  695.3

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Hope this helps.

898.1666667

step-by-step explanation:

5389/6 = 898.1666667

a reflection across the x axis and a 90 degree rotation left and right.