Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : May 30, 2023


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Regular Octagon Side


Area of a Regular Octagon side 21 ft is 2129.336362 ft²

Area of a Regular Octagon side 21 ft is 2129.336362 ft²


    Area of a Regular Octagon side 21 ft in other units

Value unit
0.6490217 km²
0.4032844 mi²
649.0217231
2129.336362 ft²
25552.036344 in²
709.7787873 yd²
64902.1723138 cm²
649021.7231376 mm²

Steps:

Given that Side, a = 21 ft

We know that, Area = 2 (1 + √2) * a²

Put the value of side in area Formula.

A = 2 (1 + √2) * 21²

Simplify the above equation

A = 2129.336362 ft²

∴ Area of a Regular Octagon side 21 ft is 2129.336362 ft²