Fix wrong conversion

Author: andreia-ferreira

app/src/main/java/org/groundplatform/android/ui/util/PolygonUtil.kt

@@ -25,6 +25,7 @@ import org.groundplatform.android.model.settings.MeasurementUnits
 
 @VisibleForTesting const val SQUARE_METERS_PER_ACRE = 4046.86
 @VisibleForTesting const val SQUARE_METERS_PER_HECTARE = 10_000
+@VisibleForTesting const val SQUARE_FEET_PER_SQUARE_METER = 10.7639
 
 /**
  * Calculates the area of a polygon using the Shoelace formula.
@@ -61,7 +62,7 @@ fun getFormattedArea(areaInSquareMeters: Double, measurementUnits: MeasurementUn
         }
       MeasurementUnits.IMPERIAL ->
         if (areaInSquareMeters < SQUARE_METERS_PER_ACRE) {
-          areaInSquareMeters to "ft²"
+          areaInSquareMeters * SQUARE_FEET_PER_SQUARE_METER to "ft²"
         } else {
           areaInSquareMeters / SQUARE_METERS_PER_ACRE to "ac"
         }

app/src/test/java/org/groundplatform/android/util/PolygonUtilTest.kt

@@ -22,6 +22,7 @@ import kotlin.test.Test
 import kotlin.test.assertTrue
 import org.groundplatform.android.model.geometry.Coordinates
 import org.groundplatform.android.model.settings.MeasurementUnits
+import org.groundplatform.android.ui.util.SQUARE_FEET_PER_SQUARE_METER
 import org.groundplatform.android.ui.util.SQUARE_METERS_PER_ACRE
 import org.groundplatform.android.ui.util.SQUARE_METERS_PER_HECTARE
 import org.groundplatform.android.ui.util.calculateShoelacePolygonArea
@@ -200,7 +201,12 @@ class PolygonUtilTest {
   fun `Should display area in square feet if it's below an acre`() {
     val areaInSquareMeters = 2000.0
     val result = getFormattedArea(areaInSquareMeters, MeasurementUnits.IMPERIAL)
-    val expected = String.format(Locale.getDefault(), "%.2f ft²", areaInSquareMeters)
+    val expected =
+      String.format(
+        Locale.getDefault(),
+        "%.2f ft²",
+        areaInSquareMeters * SQUARE_FEET_PER_SQUARE_METER,
+      )
     assertEquals(expected, result)
   }