What is the greatest perimeter of a rectangle With an área of 39 square feet

Answers

Answer 1

Answer: There is no greatest perimeter.

The shortest perimeter for a fixed area is when you use
the area to make a circle.

The next shortest perimeter for a fixed area is when you
use the area to make a square.

But the longer and skinnier you make it, the longer the perimeter
becomes, without any limit.

Examples:

circle, radius = 3.523 . . area = 39 . perimeter = 22.14
√39 by √39 . . . . . area = 39 . . . . . perimeter = 24.98
6 by 6.5 . . . . . . . area = 39 . . . . . perimeter = 25

5 by 7.8 .. . . . . . . area = 39 . . . . . perimeter = 25.6
4 by 9.75 . .. . . . . area = 39 . . . . . perimeter = 27.5
3 by 13 . . . . . . . . area = 39 . . . . . perimeter = 32

2 by 19.5 . .. . . . . area = 39 . . . . . perimeter = 43
1 by 39 . . . . . . . . area = 39 . . . . . perimeter = 80
0.1 by 390 . . . . . area = 39 . . . . . perimeter = 780.2

0.01 by 3,900 . . area = 39 . . . . . perimeter = 7,800.02

Answer 2

Answer: x=lentht
y=width
area=xy

xy=39 ⇒x=39/y

Perimeter of a rectangle=2x+2y

P(x,y)=2x+2y
P(y)=2(39/y)+2y
P(y)=78/y+2y
P(y)=(78+2y²)/y

Therefore ;P(y) will be gratest if y⇒0

We calculate the next limit.

lim y⇒0 (78+2y²)/y=lim y⇒0 (78/y+2y)=∞

For exmple:
y=0.1 ft
then;; x=39/ 0.1=390 ft

P(2*390 ft+2*0.1 ft)=780.2

y=0.001 ft
Then; x=39/0.001=39000 ft

P(2*39000 ft+0.001 ft)=78000,002 ft.

Answer: the greatest perimeter of a rectangle with an area of 39 ft²⇒∞

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2+2 x 4 what is the answer

Answers

Answer: 10

Step-by-step explanation: The order of operations gives us instructions on how to simplify expressions that contain more than one operation.

In this problem, we have both addition and multiplication.

According to order of operations, we must do the multiplication before the addition.

So here, our first step is to multiply 2 × 4 which is 8 and we have 2 + 8 which is 10.

Notice that if we had added first then multiplied, we would have had 2 + 2 which is 4 and 4 × 4 is 16 which is an incorrect answer.

You can see that order of operations is very important.

Answer:the answer is 10

Step-by-step explanation:

What is the area? Thank u for helping!

Answers

To find the area, do 2+2+2+4+5
To find the volume, do 2×2×2×4×5

Area of triangle is 1/2 * base * height
1/2 * (2+2+2) * 4
1/2 * 6 * 4
12 cm^2
Area of rectangle is length * breadth
5 * 2
10 cm^2
Total area is 10 + 12
That is 22 cm^2.

the area of a rectangular city park is 25/54 square miles. The length of the park is 5/9 mile what is the width in miles of the park?

Answers

Width = Area / Length

Width = (25/54) / (5/9)

= 25 / 54 × 9 /5

= 5 / 6

Width = 5 / 6 mile

luke can run a mile in 7 minutes. colleen can run a mile in 5 minutes. at this rate, how much longer would it take luke to run 11 miles than it would take colleen to run 11 miles?

Answers

Speed of a object is defined as the total distance covered in the total time taken. To run 11 miles Luke take 22 minutes longer than the colleen to run 11 miles.

Given information-

Luke can run a mile in 7 minutes.

Colleen can run a mile in 5 minutes.

What is speed?

Speed of a object is defined as the total distance covered in the total time taken. Speed is the ratio of the distance $d$ to the time taken $t$ . Thus,

$s=(d)/(t)$

As Luke can run 1 mile in 7 minutes. Thus the speed of the Luke is,

$s_l=(1)/(7)$

Thus the speed of the Luke is 1/7 miles per minute.

As Colleen can run 1 mile in 5 minutes. Thus the speed of the Colleen is,

$s_c=(1)/(5)$

Thus the speed of the Luke is 1/5 miles per minute.

The total time taken by the Luke to cover the 11 miles with the speed of 1/7 miles per minute is,

$(1)/(7) =(11)/(t)$

Solve for $t$

$t=11* 7}\nt=77$

Hence, the total time taken by Luke to run 11 miles is 77 minutes.

The total time taken by the Colleen to cover the 11 miles with the speed of 1/5 miles per minute is,

$(1)/(5) =(11)/(t)$

Solve for $t$

$t=11* 5}\nt=55$

Hence, the total time taken by Colleen to run 11 miles is 55 minutes.

Extra time taken by Luke to cover 11 miles than Colleen is,

$t=77-55=22$

Hence to run 11 miles Luke take 22 minutes longer than the colleen to run 11 miles.

Learn more about the speed here;

brainly.com/question/2292310

22 because 7 minutes per mile in 11 miles would be 77 minutes, and 5 minutes per mile in 11 miles would be 55 minutes. Therefore it takes Luke 22 more minutes than it takes Colleen to run the mile.

Cathie is making a dress with a stash. The stash needs to be 72.9 inches long, but Cathie's measuring tape is only in centimeters. Which of the following shows the number of centimeters with the correct number of significant digits, that Cathie needs to measure in order for the stash to be 72.9 inches long?

Answers

There are $2.54$ centimeters in an inch.

So do $2.54 * 72.9$ and you get $185.166$ .

An architect is designing a building on a triangular plot of land. If the base of the triangle is 100.8 feet and the height is 96.3 feet, find the available floor area of the building. Show all of your work