Question

Find the area of a rhombus whose diagonals are of length $10cm$ and $8.2cm$.

Answer 1

Area of the rhombus $=\frac{1}{2}\times d_1{d}_2$ where $d_1,d_2$ are lengths of diagonals
$$\begin{array}{cc}& =\frac{1}{2}\times 10\times 8.2{cm}^2\\ & =41{cm}^2\end{array}$$