Answered

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what is the greatest perimeter of a rectangle with an área of 39 Square feet?

Sagot :

AL2006idn

-- The smallest perimeter is about 24.98 feet ... that's  4 √39 .

-- There is no 'greatest'.  If somebody gives you a gigantic perimeter
with an area of 39 square feet, I can always make a rectangle with the
same area and a bigger perimeter.

Example:

3-ft by 13-ft . . . Area = 39 ft² . . . Perimeter = 32 feet

1-ft by 39-ft . . . Area = 39 ft² . . . Perimeter = 80 feet

6-in by 78-ft . . . Area= 39 ft² . . . Perimeter = 157 feet

1-in by 468-ft . . Area = 39 ft² . . . Perimeter = 936-ft 2-in

0.1inch by 4,680-ft . . Area = 39 ft² . . . Perimeter = 9,360-ft  0.2-inch
                                                                                (about 1.77 miles !)


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