Question

In a square, the sum of the lengths of three sides is 45 and in a rectangle the difference between a length and a width is 5 in. if a width of the rectangle is the same as a side of the square, how long is a length of the rectangle?

Answer 1

Square:
We know all sides of a squares are equal in length.
s= the length of one side of the square.
45= s+s+s
45= 3s
s=15 inches
Each side of the square is 15 inches.

Rectangle:
length(l)= ????
Width(w)= s = 15 inches

l -w= 5inches
l- (15 inches)= 5 inches
l = 20 inches


Answer:
A length of the rectangle is 20 inches long.