How do you use pythagorean theorem to solve the right triangle if the legs have lengths 4 and 9? Trigonometry Right Triangles The Pythagorean Theorem 2 Answers Pratik B. Jun 4, 2015 In this case consider the triangle to be standing on 2 legs. Pratik B. · Meave60 Jun 4, 2015 The equation for a right triangle is #c^2=a^2+b^2#. Let #a=9 and b=4#. #c=sqrt(a^2+b^2)# #c=sqrt(9^2+4^2)# #c=sqrt(81+16)=sqrt(97)# Related questions What is the Pythagorean Theorem? How did the pythagorean theorem come about? What does the pythagorean theorem mean? What is the diagonal length of the suitcase to the nearest tenth of a foot if a suitcase measures ... How do you know what to plug in for a, b, c in the pythagorean theorem? What is the length of b in a right triangle if #a=2# and #c=24#? What is the length of the ladder if a ladder of length L is carried horizontally around a corner ... How do you find the missing side of a triangle if one long side is 12 and the base is 5? How do you find the third side of a right triangle if the base is x = 20m, and height is y = 20m? How do you find the length side of c of a right triangle if side a = 15 and side b = 20? See all questions in The Pythagorean Theorem Impact of this question 215 views around the world You can reuse this answer Creative Commons License