A string of 4.8m. A boy measured it to be 4.95 m find the percentage error

You are correct, my previous response made an error in the calculation. Apologies for the confusion.

To find the percentage error:
Percentage Error = ((Measured Value - Actual Value) / Actual Value) * 100

Substituting the given values:
Percentage Error = ((4.5 - 4.8) / 4.8) * 100

Simplifying the expression:
Percentage Error = (-0.3 / 4.8) * 100
Percentage Error ≈ -6.25

Therefore, the percentage error is approximately -6.25%. This negative sign indicates that the measured value is smaller than the actual value.

The actual length is 4.8m and the measured length is 4.95m.

To find the percentage error, we can use the formula:

Percentage Error = ((Measured Value - Actual Value) / Actual Value) * 100

Substituting the given values, we get:

Percentage Error = ((4.95 - 4.8) / 4.8) * 100

Simplifying the expression, we have:

Percentage Error = (0.15 / 4.8) * 100

Percentage Error ≈ 3.125

Therefore, the percentage error is approximately 3.125%.

4.5m-4.8m=0.15m,

Divide 0.15 by 4.8 and times by 100 .
0.15/4.8×100
=25/8 = 3.125% .

To calculate the percentage error, we need to find the absolute difference between the measured value and the actual value, and then divide it by the actual value. Finally, we multiply the result by 100 to obtain the percentage.

Actual value = 4.80 m
Measured value = 4.95 m

Absolute difference = |Measured value - Actual value|
Absolute difference = |4.95 - 4.80|
Absolute difference = 0.15 m

Percentage error = (Absolute difference / Actual value) * 100
Percentage error = (0.15 / 4.80) * 100
Percentage error ≈ 3.13%

Therefore, the percentage error is approximately 3.13%.