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.
Answer: A≈695.29cm²
Round to the nearest tenth = 695.3
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Hope this helps.
