The answer is 72. You can figure this out using the Pythagorean theorem: C (78) squared - A (30) squared = B squared though since you already know the longest side. 78 x 78 = 6084 30 x 30 = 900 6084-900= 5184 The square root of 5184 is 72.
Yes, because when the side lengths of a triangle are in the ratio 3: 4: 5, then it is a right triangle. These sides are 6: 8: 10, then the triangle is a right one.
