Alright, lets get started.
space that is 7.0 cm long and 4.0 cm wide it means space is in rectangular shape.
The lenght of the space = 7 cm
The width of the shape = 4 cm
The formula of area of rectange = length * width
The area of rectange =

The area of rectange = 28 square cm
So, the area of the space you are aiming for 28 square cm. : Answer
Hope it will help :)