Question

if the length and breadth of a rectangular 7 x and 4x, respectively, then its area is

Answer 1

Unless, mentioned the value of variable we cannot find the exact value of area, hence your answer will also be in terms of the variable ' x '.

Length of the rectangle = 7x
Breadth of the rectangle = 4x

We know that area is the surface enclosed by the boundaries of a plane figure.

Hence,

Area of rectangle = Length * Breadth
Area of rectangle = 7x * 4x = 28x ^ 2