Posted by joy on .
a rhombus has an area of 165 square units. Of the lenght of one of its diagonals is 15 units, find the lenght of its other diagonal

Geometry 
DrRuss,
area of a rhombus is
(d1 x d2)/2
where d1 and d2 are the lengths of the diagonals. Substitute the area and the diagonal to find the other diagonal.