Given that positive numbers a and b with a > b satisfy the equation a^2+b^2=104 and ab=20, find the value 3(a^2-b^2).​

How are sas and sss used to show that two triangles are congruent?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm