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nexus9112 [7]
2 years ago
14

Please help i been asking since yesterday

Mathematics
2 answers:
Advocard [28]2 years ago
4 0

Answer:

To calculate the perimeter of a triangle, add the length of its sides. For example, if a triangle has sides a, b, and c, then the perimeter of that triangle will be P = a + b + c.

svp [43]2 years ago
4 0

Answer:

1) 21.24cm

2)19.8ft

3)22.84mm [2.284cm]

Step-by-step explanation:

To calculate the perimeter of a triangle, add the length of its sides.

1) perimeter = 5.4+8.84+7

=>    5.4+8.84+7 = 21.24,

 21.24cm

2) perimeter = 6.6 + 6.6 + 6.6  i.e  6.6* 3

=>    6.6 x 3 = 19.8

 19.8ft

3) perimeter = 8.3 + 4.9 + 9.64

=>     8.3 + 4.9 + 9.64 =  22.84

22.84mm or 2.284cm

AREA

1) it's a right triangle,

 =>    Area of a right triangle = 1/2 × base × height.

 =>    here, base is a and height is b

 =>    a = 7, b = 5.4

 =>   now we multiply it,  

 => 7*5.4 = 37.8

 => now multiply it with 1/2,  

 => 1/2 x 37.8 =  37.8/2

 => 37.8/2  = 18.9

 

2) it's an equilateral triangle,

18.8620

the formula is  √3 a^2/ 4

=>    √3* 6.6^2/ 4  

=>    75.4481/4 = 18.8620

3)  20.335

    base = a = 8.3

    height = b = 4.9

=>    8.3 * 4.9 = 40.68

=>     40.68/2 = 20.335

hope this helps:)

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The consideration of the Age Distribution of the Population of the United States South Region shows that:

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Section: 3: Age Dependency Ratio: 50.3364%

Section: 4: Interpret: About 31% of the children and 19% of old people of the South region depend on their working adults.

Section: 5: Extend: This implies that more than 50% of children and old people in the United States depend on 50% of the working population for survival.

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Both sexes             306,108      54,782         66,104      113,274        71,946

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65 years and older 39,178         7,647           8,715        14,256         8,560

<h3>South Region:</h3>

Section: 1: Child Dependency Ratio: =31.4160% (23,671/75,347 x 100)

Section: 2: Old-age Dependency Ratio: 18.9205% (14,256/75,347 x 100)

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Section: 4: Interpret: About 31% of the children and 19% of old people of the South region depend on their working adults.

Section: 5: Extend: This implies that more than 50% of children and old people depend on the working population.

Thus, the records show that a little over 50% of the population depends on less than 50% population for survival.

Learn more about Age Distribution of Population at brainly.com/question/3581713

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