5.The diagonals of a rhombus are 7.5 cm and 12 cm. Find its area.
Given,d1 = 7.5 cm, d2 = 12 cm Area of a rhombus =$$\frac { 1 }{ 2 } x (product of diagonals)$$
$$=\frac{1}2\times (d1\times d2)$$
$$=\frac{1}2\times (7.5 \times 12)$$
$$=7.5\times 6$$
$$=45 cm^2$$
So the area of rhombus=45 $$cm^2$$