Topic Review — Area — Solutions

1. Area of Parallelograms:

   1. 48 cm² ▶ View Solution
   2. 70 m² ▶ View Solution
   3. 38 cm² ▶ View Solution
   4. 140 mm² ▶ View Solution
   5. h = 8 cm ▶ View Solution
   6. b = 13 m ▶ View Solution

2. Area of Triangles:

   1. 40 cm² ▶ View Solution
   2. 27 m² ▶ View Solution
   3. 26 mm² ▶ View Solution
   4. 22.5 cm² ▶ View Solution
   5. h = 6 m ▶ View Solution
   6. 35 cm² ▶ View Solution

3. Missing Dimensions:

   1. b = 8 cm ▶ View Solution
   2. h = 6 m ▶ View Solution
   3. h = 7 mm ▶ View Solution
   4. b = 6 cm ▶ View Solution

4. Composite Shapes:

   1. 157.5 cm² ▶ View Solution
   2. 60 m² ▶ View Solution
   3. 55 m² ▶ View Solution
   4. 66 m² ▶ View Solution

5. Real-World Problems:

   1. $1 440 ▶ View Solution
   2. $210 ▶ View Solution
   3. 14.25 m² ▶ View Solution
   4. 36 cm² ▶ View Solution
   5. $18 000 ▶ View Solution

6. Choose the Correct Formula:

   1. A = ½ × base × height (A = ½bh) ▶ View Solution
   2. A = base × height (A = bh) ▶ View Solution
   3. Triangle area = ½bh; parallelogram area = bh; so triangle = ½ × parallelogram area with the same base and height ▶ View Solution

7. Units of Area:

   1. 35 000 cm² ▶ View Solution
   2. 8.5 m² ▶ View Solution
   3. 24 m² = 240 000 cm² ▶ View Solution

8. Algebraic Base:

   1. ½ × (2x + 3) × 8 = 52 ▶ View Solution
   2. x = 5 ▶ View Solution
   3. Base = 13 cm, height = 8 cm ▶ View Solution

9. Trapezium Split:

   1. Parallelogram (base 5 m, height 4 m) on the left; triangle (base 4 m, height 4 m) on the right ▶ View Solution
   2. 20 m² ▶ View Solution
   3. 8 m² ▶ View Solution
   4. 28 m² ▶ View Solution

10. Community Park:

    1. 600 m² ▶ View Solution
    2. 15 m² ▶ View Solution
    3. 585 m² ▶ View Solution
    4. $1 462.50 ▶ View Solution