84=1/2*12*d2
84=6*d2
d2=84/6
=14cm Area of rhombus = 1/2 *(product of its diagonals)
The diagonals of a rhombus are 7.5 cm and 12 cm.Find its area.
Perimeter of a rhombus is 146cm and one diagonal is 55cm. Find the other diagonal and area of a rhombus.