The length of a body is measured as 3.51m, if the acuracy is 0.01 m, then the percentage errof in the measurement is

If the length of a cylinder is measured to be 8.28cm with an error of 0.01cm then the percentage error in measured length is nearly.

If the length of a cylinder is measured to be 4.28 cm with an error of 0.01cm , the percentage error in the mesured length is nearly