Question #252d4 Geometry Congruence Theorems concerning Triangle Properties 1 Answer Barney V. Jan 24, 2017 a=2.76 Explanation: Using Pythagoras #c^2=a^2+b^2# #:. a^2+b^2=c^2# #:.a^2=c^2-b^2# #:. a^2=3.12^2-1.45^2# #:.a^2=9.7344-2.1025# #:.a^2=7.6319# #:.a= sqrt 7.6319# #:.a=2.763# check: #:.c^2=1.45^2+2.763^2# #:.c=sqrt(1.45^2+2.763^2)# #:.c=sqrt(2.1025+7.6176)# #:.c=sqrt9.7201# #:.c=3.118# or 3.12 Answer link Related questions Calculate the base of the rectangle? There is a tunnel which has a maximum depth below ground of 196.9 ft. The downward incline is at... A triangle has two sides that measure 2.5 cm and 16.5 cm. Which could be the measure of the third side? Can you construct a triangle that has side lengths 1 cm, 15 cm, and 15 cm? Can you construct a triangle that has side lengths 2 yd, 9 yd, and 10 yd? Can you construct a triangle that has side lengths 4 m, 5 m and 9 m? How do you know if a triangle has triangle ambiguity or not and how many "triangle ambiguities" it has? Question #26b3a We have #DeltaABC#and the point M such that #vec(BM)=2vec(MC)#.How to determinate x,y such that... Can you prove it? See all questions in Theorems concerning Triangle Properties Impact of this question 2131 views around the world You can reuse this answer Creative Commons License