Assertion: octagon's area | /r/HasProperty | squared
Facets:
Source sentences:
text: For an octagon with an edge length of x feet, the area would be 4.828 times x squared.
text: Area of a regular octagon, A = 2a2 (1+√ 2 ) Square units
text: For an octagon with an edge length of x feet, the area would be 4.828 times x squared.