What is $20 \%$ of $38 m^2$?
Answer (1)
Convert the percentage to a decimal: 20% = 0.20 .
Multiply the decimal by the area: 0.20 × 38 m 2 .
Calculate the result: 0.20 × 38 = 7.6 .
The final answer is 7.6 m 2 .
Explanation
Converting Percentage to Decimal We need to find 20% of 38 m 2 . To do this, we first convert the percentage to a decimal. 20% is the same as 100 20 , which simplifies to 0.20 .
Multiplying Decimal by Area Next, we multiply the decimal by the given area: 0.20 × 38 m 2 .
Calculating the Result Calculating the result, we get 0.20 × 38 = 7.6 . Therefore, 20% of 38 m 2 is 7.6 m 2 .
Examples
Understanding percentages is crucial in everyday life. For instance, when shopping, you often encounter discounts expressed as percentages. If a store offers a 20% discount on an item priced at $38, calculating 20% of $38 helps you determine the amount you'll save. This calculation is also useful in understanding taxes, interest rates, and various other financial transactions, making it a fundamental skill for managing personal finances and making informed decisions.
