Answer:
<u><em>300ft²</em></u>
Step-by-step explanation:
Step 1)
<u>Multiply The Walkway</u>
<u><em>(3 × 30)2 = 180ft²</em></u>
<u><em>(3 × 20)2 = 120ft²</em></u>
Step 2)
<u>Add The Walkway</u>
<u><em>180ft² + 120ft² = 300ft²</em></u>
Step 3)
<em><u>Multiply The Whole Area Including The Walkway and The Garden</u></em>
<u><em>30 × 20 = 600ft²</em></u>
Step 4)
<em><u>Subtract The Whole Area By The Walkway</u></em>
<u><em>600ft² - 300ft² = 300ft²</em></u>
Step 5)
<u><em>The Area Of The Garden is 300ft²</em></u>