Question

Find the area of a rhombus whose one side measures 5 cm and one diagonal as 8 cm.​

Answer 1

Diagonals bisect each other and they are perpendicular in rhombus

Let half the length of second diagonal be x

As two diagonals and a side form right angled triangle ;

⇒x2+42=52

⇒x=3

⇒length of 2nd side =2x=6cm

Area of rhombus =21d1d2

                             =21×8×6

                              =24cm2