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irakobra [83]
3 years ago
9

Find the surface area of the square pyramid (above) using its net (below). 3

Mathematics
1 answer:
Murljashka [212]3 years ago
6 0

Answer

33

Step-by-step explanation:

11 of the faces is a square.

\begin{aligned} \text{Area of a square} &= \text{side} \cdot \text{side}\\\\ &= 3 \cdot 3\\\\ &= {\blueD{9}} \\\\ \end{aligned}

Area of a square

​

 

=side⋅side

=3⋅3

=9

​

Hint #22 / 4

444 of the faces are triangles. Each triangle has the same base and height.

\begin{aligned} \text{Area of a triangle} &= \dfrac12 \cdot \text{base} \cdot \text{height}\\\\ &= \dfrac12 \cdot 3 \cdot 4\\\\ &= 6 \\\\ \end{aligned}

Area of a triangle

​

 

=

2

1

​

⋅base⋅height

=

2

1

​

⋅3⋅4

=6

​

The total area of these 444 triangles is 4 \cdot 6 = \greenD{24}4⋅6=244, dot, 6, equals, start color #1fab54, 24, end color #1fab54.

Hint #33 / 4

Let's add the areas we found to find the surface area.

\begin{aligned} \text{Surface area} &= \blueD{9}+ \greenD{24}\\\\ &= 33\\\\ \end{aligned}

Surface area

​

 

=9+24

=33

​

Hint #44 / 4

The surface area of this square pyramid is 333333 units^2

2

squared.

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Answer:

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Step-by-step explanation:

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r = 7

A = π(7)²

= 49π

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4 0
2 years ago
PLEASE HELP THIS IS SCIENTIFIC NOTATION AND MY TEACHER DOESNT TELL US HOW TO DO IT
kramer

Answer:

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3 years ago
Solve for z. z−49−13=59 Enter your answer in the box. z=
REY [17]

Hello there!

Solve for z.

z-49-13=59

Explanation

↓↓↓↓↓↓↓↓↓↓↓

First you had to subtract by the numbers.

-49-13=-62

z-62=59

Then you add by 62 from both sides of the equation.

z-62+62=59+62

Simplify it should be the correct answer.

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Answer⇒⇒⇒⇒z=121

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

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3 0
3 years ago
Read 2 more answers
Work out the value of x
Paraphin [41]

Answer: x = 133 degrees

Step-by-step explanation:

Well this problem becomes a lot easier when you break it down into steps and understand parallel lines and the angles that are formed from them.  We are trying to work out what x would be so the first step would be to find an easy way to accomplish this.  If you know the different types of angles that are formed from parallel lines we would know that corresponding angles are = to each other.  This means that the 47 degree angle is the same as the angle directly above this, which I hope you too can visualize in the image as well.  Since this new 47 degree angle that we figured out is right next to the angle we want to find out the value for the next step is quite simple.  Since we of course know that a straight line is 180 degrees we just need to subtract 47 from 180 to find this x value as it would be whatever forms a straight line.  180-47=133 so the answer is x = 133 degrees.  I hope this has helped you and please do no hesitate to ask further follow up questions!  Have a wonderful rest of your day :)

8 0
3 years ago
The equation c = 2000 + 3r represents the cost in dollars (C) of producing remote
ladessa [460]

Answer:

The cost of producing 1000 remote controls is $5000.

Step-by-step explanation:

You have to substitute r = 1000 into the expressions :

c = 2000 + 3r

let \: r = 1000

c = 2000 + 3(1000)

c = 2000 + 3000

c = 5000

8 0
3 years ago
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