Answer:
Marcia will need 40 inches of wood for the frame
Step-by-step explanation:
The question in English is
Marcia will make a frame for her painting. The length of the frame is 15 inches, the width is a third of the length. How much wood does Marcia need for the frame?
we know that
The perimeter of a rectangle is given by the formula
[tex]P=2(L+W)[/tex]
where
L is the length
W is the width
we have
[tex]L=15\ in[/tex]
the width is a third of the length
so
[tex]W=\frac{1}{3}L[/tex]
substitute the value of L
[tex]W=\frac{1}{3}(15)=5\ in[/tex]
Find the perimeter
[tex]P=2(15+5)=40\ in[/tex]
