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Mkey [24]
3 years ago
10

Which rectangle has the smallest perimeter

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
4 0
<h2>PERIMETER</h2>

\rm\large{Hi!!}

<h3>PROBLEM: </h3>

  • The table below lists the widths of four rectangles each with an area of 72 cm².

Rectangle 1 : 6 cm (width)

Rectangle 2 : 8 cm (width)

Rectangle 3 : 10 cm (width)

Rectangle 4 : 18 cm (width)

Which of the four rectangle has the smallest perimeter?

\huge\purple{\overline{\quad\quad\quad\quad\quad\quad\quad\quad \ \ \ }}

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

<h3>ANSWER and SOLUTION:</h3>

  • Now, to be able to determine <em>what </em><em>rectangle</em><em> </em><em>has</em><em> </em><em>the </em><em>smallest</em><em> </em><em>perimeter</em><em>,</em><em> </em>we have to get the perimeter of all rectangles.

FORMULA TO BE USED: P = 2(l+w)

Now that we have the formula, Let's Solve!!

\huge\purple{\overline{\quad\quad\quad\quad\quad\quad\quad\quad \ \ \ }}

CALCULATION FOR RECTANGLE 1:

Given:

  • Length = 72
  • Width = 6

Formula:

  • P = 2(l+w)

Substitution:

  • P = 2(72+6)
  • P = 2(78)
  • P= 156

  • The <u>perimeter of Rectangle 1 is 156.</u>

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

CALCULATION FOR RECTANGLE 2:

Given:

  • Length = 72
  • Width = 8

Formula:

  • P = 2(l+w)

Substitution:

  • P = 2(72+8)
  • P = 2(180)
  • P = 160

  • The <u>perimeter of Rectangle 2 is 160.</u>

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

CALCULATION FOR RECTANGLE 3:

Given:

  • Length = 72
  • Width = 10

Formula:

  • P = 2(l+w)

Substitution:

  • P = 2(72+10)
  • P = 2(82)
  • P = 164

  • The <u>perimeter of Rectangle 3 is 164.</u>

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

CALCULATION FOR RECTANGLE 4:

Given:

  • Length = 72
  • Width = 18

Formula:

  • P = 2(l+w)

Substitution:

  • P = 2(72+18)
  • P = 2(90)
  • P = 180

  • The <u>perimeter</u><u> </u><u>of </u><u>Rectangle </u><u>4</u><u> </u><u>is </u><u>1</u><u>8</u><u>0</u><u>.</u>

\huge\purple{\overline{\quad\quad\quad\quad\quad\quad\quad\quad \ \ \ }}

<h3>NOW, LET'S SUMMARIZE THE PERIMETER OF EVERY RECTANGLE^^</h3>

  • Rectangle 1 = 156
  • Rectangle 2 = 160
  • Rectangle 3 = 164
  • Rectangle 4 = 180

Now, among all of these four rectangles, which one is the smallest? Yes, <u>the one that has the smallest perimeter is the Rectangle 1</u>.

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

Again, the final answer is <u>A. Rectangle 1</u>.

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

⊱┈──────────────────────┈⊰

(^_^メ)

Hi, Im Daubechies, a Filipina user ≧▽≦

77julia77 [94]3 years ago
3 0

Rectangle 1 !!!!!!!!!!!

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Question:

The lifetime (in hours) of a 60-watt light bulb is a random variable that has a Normal distribution with σ = 30 hours. A random sample of 25 bulbs put on test produced a sample mean lifetime of = 1038 hours.

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