<prompt> Kujenga angalau 3 kesi za mtihani kwa ajili ya kazi hii.def calculate_arealength, width: return length width  <response>: 1. Uchunguzi 1: Input: calculate_area5, 10 Inatarajiwa pato: 50 2. Uchunguzi 2: Input: calculate_area0, 5 Inatarajiwa pato: 0 3. Uchunguzi 3: Input: calculate_area-3, 4 Inatarajiwa pato: -12 