If all of the medians of a triangle were constructed, what would the point where they all intersect be called?

Can (3,5 and square root 34) be sides on a right triangle?

State if the two triangles are congruent. if they are, state how you know?

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?