18. Find the value of the variables and area of the rectangle

Identify the values of \(a\) and \(b\) of the rectangle if its vertices are \(M(-5, a)\), \(N(2, 4)\), \(O(2, -3)\) and \(P(b, -3)\) taken in order. Also, find the area of the rectangle.

 

\(a =\)  and \(b =\)

 

Area of the rectangle \(=\)  sq. units