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9 votes
9 votes
ABC is a right triangle. If AB= 3 and AC= 7, find BC. Leave your answer in the simplest radical form.

1.) 2√13
2.) √58
3.) 4√3
4.) 2√3

User Bearoplane
by
2.8k points

1 Answer

22 votes
22 votes
  • AB=3
  • AC=7

Using Pythagorean theorem


\\ \sf\longmapsto BC^2=AB^2+AC^2


\\ \sf\longmapsto BC^2=7^2+3^2


\\ \sf\longmapsto BC^2=49+9


\\ \sf\longmapsto BC^2=58


\\ \sf\longmapsto BC=√(58)

User Rohan Patel
by
2.9k points