Problem
A rhombus the length of its diagonals \( 5 \mathrm{~cm}, 6 \mathrm{~cm} \) Its area equals \( \mathrm{cm}^{2} \)
Solution
Step 1 ：\( A = \dfrac{1}{2} d_1 \cdot d_2 \)
Step 2 ：\( A = \dfrac{1}{2} (5)(6) \)
Step 3 ：\( A = 15 \mathrm{cm}^{2} \)
