Find the area of a regular octagon with a side length of 10cm

Steps:
Shape: Regular octagon
Solved for area
Side= 10cm
Formula: A=2(1√+2)a2
Round to the nearest tenth = 482.8
Description:
Using the formula for the area of Regular octagon ( A=2(1√+2)a2) We have to calculate the side length that is 10 cm. Your answer will equal as A≈482.84cm² after you calculate. Since it says to round to the nearest tenth your answer will come as 482.8.
Answer: A≈482.84cm²
Round to the nearest tenth = 482.8
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