Question

Hey math ppl, i need some help pls, question in photo

Answer 1

`\text{Use the Pythagorean theorem:}\\\\a^2+b^2=c^2\\\\\text{Plug in and solve:}\\\\7^2+14^2=c^2\\\\49+196=c^2\\\\245=c^2\\\\\text{Square root both sides to cancel out the exponent}\\\\√(245)=√(c^2)\\\\\boxed{7√(5)=c}\\\\`