Posted by **kyle** on Saturday, April 14, 2007 at 11:48am.

The length of a rectangle is 2 times its width and its perimeter is 42 cm. A ssquare is formed by putting together 2 rectangles like this. Find the length and width of the edge and the area of this square.

"A ssquare is formed by putting together 2 rectangles like this."

Like what?

I assume you are placing two of the rectangles you describe together with long side against long side.

The original rectangle would be x by 2x and the new square would be 2x by 2x

from the original x +x+ 2x + 2x = 42

solve for x, and use that value to find the area of the square.

ok so i got 7 for the area of the square... how do i find the edge and length

the square has equal sides, the length and the width are the same:

s is side length

s

^{2} = 7

take the square root of each side.

ok i did it again and for the length and the width i got 14 and 7 how do i find the edge?

no, you got 7 for the width of the original rectange, so its length is 14

which makes the square 14 by 14 for an area of 196

## Answer this Question

## Related Questions

- basic geometric - 10. a rectangle has width the same as a side of a square whose...
- basic geometry - A rectangle has width the same asa a side of a square whose ...
- geometric - The perimeter of a rectangular carpet is 70feet. The with is three -...
- algebra - The length of a rectangle is 6 cm more than four times the width. If ...
- math,help - help Probblem #6 solve by multiplying through with the common ...
- math - The length of a rectangle is 4 times the width. The perimeter is 50cm. ...
- algebra - What is the width of a rectangle with a perimeter of 70 feet if its ...
- math 121 - a window is shaped like a rectangle whose perimeter is 270 in. the ...
- Math - All these are either rectangles or squares 1.Rectangle. 5 is length and ...
- maths - the length of a rectangle is 3 less than 5 times its width. Write a ...