the diagonal of a rhombus are 80 m and 120 m . its area is :
"area of the rhombus = 1 / 2 d 1 d 2 = ( 1 / 2 ã — 80 ã — 120 ) cm ( power ) 2 = 80 ã — 60 = 4800 cm ( power ) 2 answer is c ."
rhombus_area(80, 120)