To compare √5 and 2.5, we need to determine which one is greater.
In decimal form, the square root of 5 (√5) is approximately 2.2360679775.
Since 2.2360679775 is less than 2.5, we can conclude that 2.5 is greater than √5.
In decimal form, the square root of 5 (√5) is approximately 2.2360679775.
Since 2.2360679775 is less than 2.5, we can conclude that 2.5 is greater than √5.
1. Start by squaring each number:
√5^2 = 5
2.5^2 = 6.25
2. Now, compare the squared values:
5 < 6.25
Therefore, 2.5 is greater than √5.
Method 1: Comparing the Approximate Values
We can approximate the value of √5 and compare it to 2.5.
Step 1: Calculate the Approximate Value of √5
One way is to use a calculator to find the decimal approximation of √5. The square root of 5 is approximately 2.236.
Step 2: Compare the Approximations
Comparing the decimal approximation of √5 (2.236) to 2.5, we can see that √5 is slightly smaller than 2.5.
Method 2: Evaluating the Radicand
Another way to compare √5 and 2.5 is by evaluating their radicands (the numbers inside the square roots) directly.
Step 1: Evaluate √5
Evaluating √5 means finding the square root of 5. Since 5 is not a perfect square, we cannot simplify the square root any further.
√5 ≈ 2.236
Step 2: Compare the Results
Comparing the result of √5 (approximately 2.236) to 2.5, we can see that the square root of 5 is slightly smaller than 2.5.
Therefore, based on both methods, we've determined that √5 is slightly smaller than 2.5.