Answer:
39 × 75
Step-by-step explanation:
Since, the shape of the twin mattress is rectangular,
Given,
The length of the mattress = 75 inches,
Width of the mattress = 39 inches,
Now, the the area of the top of the mattress( which is covered by the quilt) = Area of the mattress
We know that,
The Area of a rectangle = Length × Width
Hence, the area of the top of the mattress = 75 × 39
= 39 × 75
Third option is correct.