Here are 10 examples of how to use the SQRT
function in Excel, including sample data and formulas:
1. Basic Square Root Calculation
Data:
25
in cellA1
Formula:
=SQRT(A1)
Result:
5
(since √25 = 5)
2. Square Root of a Sum
Data:
9
in cellA1
,16
in cellA2
Formula:
=SQRT(A1 + A2)
Result:
5
(since √(9 + 16) = √25 = 5)
3. Square Root of a Product
Data:
4
in cellA1
,25
in cellA2
Formula:
=SQRT(A1 * A2)
Result:
10
(since √(4 * 25) = √100 = 10)
4. Square Root of a Division
Data:
100
in cellA1
,4
in cellA2
Formula:
=SQRT(A1 / A2)
Result:
5
(since √(100 / 4) = √25 = 5)
5. Square Root with Exponentiation
Data:
3
in cellA1
Formula:
=SQRT(A1^2)
Result:
3
(since √(3²) = 3)
6. Square Root of a Negative Number (Error Handling)
Data:
-16
in cellA1
Formula:
=IF(A1 < 0, "Invalid Input", SQRT(A1))
Result:
Invalid Input
(since √(-16) is not a real number)
7. Square Root of an Average
Data:
4
in cellA1
,9
in cellA2
,16
in cellA3
Formula:
=SQRT(AVERAGE(A1:A3))
Result:
3
(since the average of 4, 9, and 16 is 9.666..., and √9.666... ≈ 3.11)
8. Square Root with Rounding
Data:
10
in cellA1
Formula:
=ROUND(SQRT(A1), 2)
Result:
3.16
(since √10 ≈ 3.162, rounded to 2 decimal places)
9. Square Root in a Conditional Formula
Data:
25
in cellA1
Formula:
=IF(A1 > 0, SQRT(A1), "Invalid Input")
Result:
5
(since 25 > 0, the formula calculates √25)
10. Square Root of a Dynamic Range
Data:
4
in cellA1
,9
in cellA2
,16
in cellA3
Formula:
=SQRT(SUM(A1:A3))
Result:
5.385
(since √(4 + 9 + 16) = √29 ≈ 5.385)
These examples demonstrate the versatility of the SQRT
function in Excel, including combining it with other functions like SUM
, AVERAGE
, IF
, and ROUND
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