Given: Length of a rectangular piece of land = 500 m and Breadth of a rectangular piece of land = 300 m

(i) Area of a rectangular piece of land

= Length x Breadth

= 500 x 300 = 1,50,000 m^{2}

(ii) Since, the cost of 1 m^{2} land = Rs 10,000

Therefore, the cost of 1,50,000 m^{2 }land = 10,000 x 1,50,000

=Rs 1,50,00,00,000