What’s the answer help

Part one :-

In this part we will find area of small rectangle that is white in colour.

Given :-

Length = 4 (unit)Breadth = 5 (unit)

To find :-

Area

We know :-

Area of rectangle 1= Length × BreadthArea of rectangle 1= 4 × 5Area of rectangle 1 = 20 (unit)²

Part two :-

In this part we will find are of big rectangle

Given :-

Breadth = 4 + 2Breadth = 6 (unit)Length = 7 + 5Length = 12 (unit)

To find :-

Area

We know :-

Area of rectangle 2 = Length × BreadthArea of rectangle 2 = 6 × 12Area of rectangle 2 = 72

Part 3:-

Total Area = Area of rectangle 2 - Area of rectangle 1Total Area= 72 - 20Total Area = 52 (unit)²