Question

In rhombus ABCD , 

AB  = 13 and  AC  = 25. Find the area of the rhombus   to the nearest tenth.

Answer 1

`the\ area\ of\ the\ rhombus=\\=half\ the\ product\ of\ the\ diagonals\ of\ a\ rhombus\\\\A= (1)/(2)\cdot |AB|\cdot |AC|=(1)/(2)\cdot 13\cdot 25= 162.5\ [u^2]`