The angle of \(1'\) (minute of an arc) in radian is nearly equal to:
1. \(2.91 \times 10^{-4} ~\mathrm{rad} \)
2. \(4.85 \times 10^{-4} ~\mathrm{rad} \)
3. \(4.80 \times 10^{-6} ~\mathrm{rad} \)
4. \(1.75 \times 10^{-2} ~\mathrm{rad}\)

The angle of \(1^\circ\) (degree) will be equal to:
(Use \(360^\circ=2\pi\) rad)
1. \(1.034\times10^{-3}\) rad
2. \(1.745\times10^{-2}\) rad
3. \(1.524\times10^{-2}\) rad
4. \(1.745\times10^{3}\) rad

The sum of the numbers \(436.32,227.2,\) and \(0.301\) in the appropriate significant figures is:

The radius of a circle is stated as \(2.12\) cm. Its area should be written as:

The mass and volume of a body are \(4.237~\text{grams}\) and \(2.5~\text{cm}^3\), respectively. The density of the material of the body in correct significant figures will be:
1. \(1.6048~\text{grams cm}^{-3}\)
2. \(1.69~\text{grams cm}^{-3}\)
3. \(1.7~\text{grams cm}^{-3}\)
4. \(1.695~\text{grams cm}^{-3}\)

The numbers \(2.745\) and \(2.735\) on rounding off to \(3\) significant figures will give respectively, 
1. \(2.75\)  and \(2.74\)
2. \(2.74\)  and \(2.73\)
3. \(2.75\) and \(2.73\)
4. \(2.74\) and \(2.74\)

Each side of a cube is measured to be \(7.203~\text{m}\). What are the total surface area and the volume respectively of the cube to appropriate significant figures? 
1. \(373.7~\text{m}^2\) and \(311.3~\text{m}^3\)
2. \(311.3~\text{m}^2\) and \(373.7~\text{m}^3\)
3. \(311.2992~\text{m}^2\) and \(373.7147~\text{m}^3\)
4. \(373.7147~\mathrm{m^2}\) and \(311.2992~\text{m}^3\)