The unit of percentage error is

An equilateral triangle is of side 10 units. In measuring the side, if an error of 0.05 unit is made. Then, the percentage error in the area of the triangle is

If the percentage error in the radius of a circle is 3 then the percentage error in its area is

If the percentage error in the surface area of sphere is k, then the percentage error in its volume is

If there is an error of 1 % is made in the side of a cube then the percentage error in its volume is

If there is an error of 3/10% in the volume of a sphere then the percentage error in its radius is

The percentage error in the measurement of mass and speed are 2% and 3% respectively. Maximum estimate of percentage error of K.E