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babymother [125]
2 years ago
5

Use the formula to find the total sum of the interior angles for a polygon with 15 sides.

Mathematics
1 answer:
trapecia [35]2 years ago
7 0

Answer:

Sum = 2,340°

Step-by-step explanation:

Sum  of interior angles = 180·(n-2),

where n is the number of sides the polygon has

Sum = 180·(15-2)

Sum = 180·13

Sum = 2,340°

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Find the surface area of the composite figure.
Sloan [31]

With the help of the <em>area</em> formulae of rectangles and triangles and the concept of <em>surface</em> area, the <em>surface</em> area of the composite figure is equal to 276 square centimeters.

<h3>What is the surface area of a truncated prism?</h3>

The <em>surface</em> area of the <em>truncated</em> prism is the sum of the areas of its six faces, which are combinations of the areas of rectangles and <em>right</em> triangles. Then, we proceed to determine the <em>surface</em> area:

A = (12 cm) · (4 cm) + 2 · (3 cm) · (4 cm) + 2 · (12 cm) · (3 cm) + 2 · 0.5 · (12 cm) · (5 cm) + (5 cm) · (4 cm) + (13 cm) · (4 cm)

A = 48 cm² + 24 cm² + 72 cm² + 60 cm² + 20 cm² + 52 cm²

A = 276 cm²

With the help of the <em>area</em> formulae of rectangles and triangles and the concept of <em>surface</em> area, the <em>surface</em> area of the composite figure is equal to 276 square centimeters.

To learn more on surface areas: brainly.com/question/2835293

#SPJ1

7 0
11 months ago
18.5 ft, 6 ft, 17.5 ft
Julli [10]
What is the question?
8 0
3 years ago
Read 2 more answers
Is anyone willing to help me with this? I tried adding this and still no answer. Please help..
GaryK [48]

Answer:   C. (-4, -2)

<u>Step-by-step explanation:</u>

First, eliminate one of the variables and solve for the remaining variable:

2x - 5y = 2      →    3(2x - 5y = 2)      →     6x - 15y = 6

3x + 2y = -16   →  -2(3x + 2y = -16)    →  <u> -6x - 4y = 32</u>

                                                                     -19y = 38

                                                                         y = -2


Next, replace "y" with -2 into either of the original equations to solve for x:

2x - 5y = 2

2x - 5(-2) = 2

2x + 10 = 2

2x         = -8

 x          = -4

                                       x = -4,  y = -2

<u>Check:</u>

Plug in the x- and y-values into the other original equation:

3x + 2y = -16

3(-4) + 2(-2) = -16

-12  +  -4     = -16

      -16         = -16   \checkmark

3 0
3 years ago
Is 3/3 and 6/6 equivalent
ella [17]
Yes. Because both equals 1 whole.
7 0
2 years ago
Read 2 more answers
In right angled triangle (not drawn to scale) measurment (in cm) of two sides are indicated in figure Find value of x in case. (
lisabon 2012 [21]

Answer:

5.29 units

Step-by-step explanation:

By Pythagoras theorem:

{6}^{2}  +  {x}^{2}  =  {8}^{2}  \\ 36 +  {x}^{2}  = 64 \\  {x}^{2}  = 64 - 36 \\  {x}^{2}  = 28 \\ x  = \sqrt{28}  \\ x = 5.29150262 \: units \\ x \approx 5.29 \: units

4 0
3 years ago
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