How to find the area of the triangle with sides 5, 6, and 7 using Heron’s formula

We will find the area of the triangle with sides 5, 6, and 7 using Heron's formula. This question is from my precalculus practice test. Get the exclusive file w/ video solutions: https://www.patreon.com/blackpenredpe... The idea and the proof of Heron’s formula    • Heron's formula (example and proof)   ----- This channel is dedicated to creating helpful precalculus tutorials for high school and college students around the world. Thanks to these Patreon members for building this with me! 3Blue1Brown • Allison Lamery • Anthony Hunting • Anyway • Ben Delo • Caoimhe Seymour • charlie lewinski • Corey Rufener • CTAR • David I Miller • Doc Ockey • exchsac • Gramps • Hayden S • huguens nevelus • jappiesaus • Jessica • Johan Renko • Karl Tang-Wang • Manil Trivedi • Mark Pagura • MarkM • Mas • Michael ZHOU • Michelle Liang • Mister Hardware • Mizel Cluett • Nerd • Nicolai Lilly • Ricardo Murillo • Rohan • SaltyFishbutwithDream • Sebastian Correa • Sharnay Ampos • Steven McEwan • Subotai Baghatur • Terry Chang • Tomaz Mevlja • Torbjörn Karlsson • Whoever • Zero • Zhansu • Matthias Beeler • bontle sjm • 博鈞 林 (Updated: October 2026   / blackpenredpen  ) ----- #bprpmathbasics #math #algebra #precalculus