If the radius of a sphere is measured as $7 \text{ m}$ with an error of $0.02 \text{ m}$, then find the approximate error in calculating its volume. (in $\pi \text{ m}^3$)

There is a possible error of $0.03 \text{ cm}$ in a scale of length $1 \text{ foot}$ with which the height of a closed right circular cylinder and the diameter of a sphere are measured as $3.5 \text{ feet}$ each. If the radii of both cylinder and sphere are same,then the approximate error in the sum of the surface areas of both cylinder and sphere is (in square feet)

If the radius of a circle increases from $3 \, cm$ to $3.2 \, cm$,then the increase in the area of the circle is

The approximate value of $\sin(60^{\circ} 0^{\prime} 10^{\prime \prime})$ is (given that $\sqrt{3}=1.732, 1^{\circ}=0.0175^{c}$):

The approximate value of $\tan ^{-1}(0.999)$ is (use $\pi=3.1415$ )

Find the approximate value of $\sqrt{25.3}$.