Posted by Anonymous on Wednesday, June 6, 2012 at 10:46pm.
Looks like a case for substitution.
width = w
length = l
width = 3/4 length
w = 3/4l
2(w + 2) + 2(l + 2) = 50cm
(2w + 4) + (2l + 4) = 50cm
Substitute w with the information you were given earlier (the width of a rectangle is three fourths the length):
2(3/4l) + 4 + 2l + 4 = 50cm
2(3/4l) + 2l + 8 = 50cm
6/4l + 2l = 42cm
1.5l + 2l = 42cm
3.5l = 42cm
l = 12cm
3/4(12cm) = 9cm
length = 12cm
width = 9cm
what is the perimeter of the rectangle w/ length x+4/x+3 and width 2x-3/x+3
Related Questions
algebra - Perimeter of a rectangle. The width of a rectangle is three fourths of...
algebra - The width of a rectangle is three fourths the length. The perimeter of...
math - The width of a rectangle is three fourths of the length. The perimeter of...
basic geometric - 10. a rectangle has width the same as a side of a square whose...
algebra , help - Can someone help me set up the equations thanks. Directions: ...
math - Suppose that the width of a rectangle is 5 inches shorter than the length...
Algebra 1 - Okay one last one that I've spent all night truing to figue out...
Algebra - the length of a rectangle is 7 cm more than its width. find the ...
Algebra/geometry - a rectangle has a width of 4 cm less than it's length. ...
basic geometry - A rectangle has width the same asa a side of a square whose ...
For Further Reading
