WAEC Geography 2025 Papers

Concept:Annual rainfall is the total precipitation recorded at a station over one full year, found by summing all monthly rainfall values.Explanation:For station X, write down the rainfall recorded for each month from January to December.The monthly rainfall values are $62, 50, 56, 89, 180, 189, 140, 163, 228, 230, 83$ and $41\ \mathrm{mm}$.Add these twelve monthly rainfall amounts together.Total annual rainfall $= 62 + 50 + 56 + 89 + 180 + 189 + 140 + 163 + 228 + 230 + 83 + 41\ \mathrm{mm}$.Adding step by step gives $62 + 50 = 112$, then $112 + 56 = 168$, $168 + 89 = 257$, $257 + 180 = 437$, $437 + 189 = 626$, $626 + 140 = 766$, $766 + 163 = 929$, $929 + 228 = 1157$, $1157 + 230 = 1387$, $1387 + 83 = 1470$, and finally $1470 + 41 = 1511$.So the annual rainfall for station X is $1511\ \mathrm{mm}$.Answer:$1511\ \mathrm{mm}$, which is option A.