Divide the sum of $\dfrac{65}{12} \text{ and } \dfrac{8}{3}$ by their difference.

[Hint: Here we have to find $\left(\dfrac{65}{12} + \dfrac{8}{3}\right) \div \left(\dfrac{65}{12} - \dfrac{8}{3}\right)$]

Find the cost of $3\dfrac{2}{5}$ metres of cloth at ₹ $63\dfrac{3}{4}$ per metre.

Find the area of a square plot of land whose each side measures $8\dfrac{1}{2}$ metres.

[Hint: Area of the plot = side² = $\left(8\dfrac{1}{2}\right)^2$ sq. m = $\left(8\dfrac{1}{2} \times 8\dfrac{1}{2}\right)$ sq. m]

A cord of length $71\dfrac{1}{2}$ m has been cut into 26 pieces of equal length. What is the length of each piece?

[Hint: Length of each piece = $71\dfrac{1}{2}$ m $\div$ 26]