Assertion: heptagon's area | /r/HasProperty | given by the equation
Facets:
value: in terms of the side length
type: OTHER
Source sentences:
text: The area of a regular heptagon A , in terms of the side length a , is given by the equation: A = \frac{7a^2}{4 \tan(\pi/7)} Since we are looking for a , we have to rearrange the formula: a^2 = \frac{4A}{7} \tan(\pi/7)