What is Heron’s formula? (Only 3 hints) [Kandagawa Jet Girls] What is Heron’s formula? (Only 3 hints) [Kandagawa Jet Girls] What is Heron’s formula? (Only 3 hints) [Kandagawa Jet Girls] byu/Embarrassed_Case_852 inanimeplot View Reddit by Embarrassed_Case_852 – View Source