Respuesta :
Area is determined by using the formula A=lw Area= Length x Width
A= 1 1/4 x 3 convert to an improper fraction
A= 5/4 x 3/1 multiply
A=15/4 divide
A=3 3/4 square feet
Answer: [tex]A=3\dfrac{3}{4}\ ft^2[/tex]
Step-by-step explanation:
Given: The dimensions of the wrapping paper :
[tex]1\text{ and}\dfrac{1}{4}\text{ feet }\text{ by 3 feet}\\\\\text{i.e }1+\dfrac{1}{4}\text{ feet }\text{ by 3 feet}\\\\\text{i.e }\dfrac{5}{4}\text{ feet }\text{ by 3 feet}[/tex]
Now, we know that the area of a rectangle is given by :-
[tex]A=length*width[/tex]
Now, the area of the wrapping paper is given by :-
[tex]A=\dfrac{5}{4}\times3=\dfrac{15}{4}=3\dfrac{3}{4}\ ft^2[/tex]