Tell which number is prime 19,28,49,63

We must first determine the shape of a rectangular prisms _ a0 to find area of the prism

Does anyone know how to do geometryme with this problem

Two line segments are shown in the figure below. suppose that the length of the line along the x-axis is 6, and the length of the hypotenuse of the triangle is 10. what is the equation of the hypotenuse line (shown in red, below)?