Multiplication & Division of Errors

Q.

The radius of a sphere is measured to be $(7.50\pm 0.85)cm$.

Suppose the percentage error in its volume is $x$.

The value of $x$, to the nearest integer $x$, is

Q.

What is the error in the area of a rectangle?

Given: L=5 $\pm$ 1 units

B= 4$\pm$2 units

1. +/-14

2. +/-12

3. +/-16

4. none of these

Q. If radius of the sphere is (5.3 $\pm$ 0.1)cm. Then percentage error in its volume will be

1. 
2. 
3. 
4. 

Q. The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in the measurement of force and length are respectively 4% and 2%, The maximum error in the measurement of pressure is

1. 6%
2. 2%
3. 8%
4. 1%

Q. The radius of the sphere increased by $10\%.$ What is the percentage increase in the volume of the sphere?