Thursday

October 23, 2014

October 23, 2014

Posted by **Anonymous** on Thursday, January 6, 2011 at 6:45pm.

- math -
**helper**, Thursday, January 6, 2011 at 7:31pmArea (A) = Lw = 288

Perimeter (P) = 2L + 2w = 68

L = length, w = width

Solve 2L + 2w = 68 for either L or w

I'll choose L

2L + 2w = 68

2L = 68 - 2w

2L = 2(34 - w)

L = 34 - w

Substitute L = 34 - w, for L in

A = Lw = 288

(34 - w)(w) = 288

34w - w^2 = 288

w^2 - 34w + 288 = 0

w = 18, 16

So, this certain rectangle has dimensions of 18 by 16.

you should be able to calculate the area and perimeter of the new rectangle now. (double the length and width and solve the equations)

- math -
**Ashley**, Monday, November 19, 2012 at 5:08pmr = 2/3t + v, for t

**Answer this Question**

**Related Questions**

Math - The area of a certain rectangle is 288 yd2 the perimeter is 68 yd. if you...

Math - The area of certain rectangle is 288 yd. the perimeter is 68 yd. if you ...

MATH - the area of a certain rectangle is 288yd squared. the perimeter is 68yd. ...

Math - The area of a rectangle is shown below The area of the rectangle is 56 ...

basic geometric - 10. a rectangle has width the same as a side of a square whose...

Math - Determine the perimeter and area of a rectangle that has a width of 6 ...

Math - The first question is this: Helen designs a rectangle with an area of 225...

maths - the length of a rectangle is 3 less than 5 times its width. Write a ...

geometric - The perimeter of a rectangular carpet is 70feet. The with is three -...

math - The width of the rectangle is half its length and the perimeter is 42m....