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Andru [333]
4 years ago
7

What is the surface area of the regular pyramid given below?

Mathematics
2 answers:
Aloiza [94]4 years ago
8 0

Answer:

Sabemos  que la apotema en 9, laaa es la medida mínima entre el centro y uno de sus lados l y e perímet  suma e dlos lados de la fie es gural ro

Step-by-step explanation:

<h3>La formula para sacar el area de un a formula poligono regular  </h3>
Aliun [14]4 years ago
4 0

Answer:

The surface area of the pyramid is 208 units²

Step-by-step explanation:

Luckily, since this is a square pyramid, we only need to find two numbers. These two numbers are the area of the base and the area of one triangular side. After we find them, we need to add them all together.

First, the base:

Since it's a square, we can just do 8 · 8 and get 64. Now we have one of the two needed numbers.

Second, one of the triangles:

To start, we multiply the base (8) by the height (9) giving us 72. After we divide that by 2, we have the area of the triangle, which is 36. Now we have the second number down. Now we can...

Finally, add them all together:

Now that we have the area of the base (64) and one of our triangles (36), we need to add them together. We add the base once and the triangle four times (because there are four triangles) to get the total surface area. Our expression looks like this:

64 + 36 + 36 + 36 + 36

After doing some simplifying, we get our final number, 208.

The surface area of the pyramid is 208 units²

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Gilbert purchased a car for 34000. The car depreciates at a rate of 14% per year. The exponential function that represents this
lyudmila [28]

Answer:

.86

Step-by-step explanation:

Exponential function formula

y = a ( 1 + or - r ) ^t

where a = initial value

r = rate of change

and t = number of years

given the equation y = 34000(0.86)^x.

r = .86

Hence the change factor is .86

4 0
3 years ago
ANSWER THIS PLEASE !!
nikklg [1K]

Answer:

B. point B

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
If the measure of angle is 0 is7x/4, which statements are true?
gayaneshka [121]

Answer:

a) The measure of the reference angle is 45°

Step-by-step explanation:

Reference angle:

   \sf \dfrac{7\pi }{4} \ is \ in \ the \ fourth \ quadrant.\\\\ \text{Reference angle = 2$\pi - \theta$}\\

                             \sf =2\pi -\dfrac{7\pi }{4}\\\\ =\dfrac{8\pi }{4}-\dfrac{7\pi }{4}\\\\= \dfrac{\pi }{4}\\\\=\dfrac{180}{4}\\\\

                             = 45°

5 0
1 year ago
Read 2 more answers
What is the distance around the perimeter of the garden? 60 ft 60 startroot 3 endroot ft 120 ft 120 startroot 3 endroot ft
Mnenie [13.5K]

The distance around the perimeter would be 120 ft.

<h3 /><h3>What is perimeter?</h3>

Perimeter is the distance around the edge of a shape.

The complete question is

A garden is designed in the shape of a rhombus formed from 4 identical 30°-60°-90° triangles. The shorter distance across the middle of the garden measures 30 feet.

A rhombus is shown. Lines are drawn from each point to the opposite point to form 4 right triangles. The other 2 angle measures are 30 and 60 degrees. The base length of each triangle is 15 feet.

What is the distance around the perimeter of the garden?

let AE is the half of the diagonal AC.

AC = 30 ft.

So, AE = ½ * 30

AE = 15 ft

Now, using trigonometry

sin 30 = 15/AD

0.5= 15/AD

AD= 30 ft

Hence, distance around the perimeter would be: AD+AD+AD+AD=

=30 ft + 30 ft + 30 ft + 30 ft

= 120 ft.

Learn more about this concept here:

brainly.com/question/16400817

#SPJ1

5 0
2 years ago
A 10 inch cookie cake is divided into 8 slices. What is the area of 3 slices
brilliants [131]

Answer:

The area of 3 slices is \frac{75}{8}\pi\ in^2  or approximate 29.4\ in^2

Step-by-step explanation:

<em>Find out the area of the cookie cake</em>

The area of the circle (cookie cake) is

A=\pi r^{2}

we have

r=10/2=5\ in ----> the radius is half the diameter

substitute

A=\pi (5)^{2}

A=25\pi\ in^{2}

Remember that the area of the complete cookie cake subtends a central angle of 360 degrees

If the cake is divided into 8 slices

then

The central angle of each slice is equal to

360/8=45°

The central angle of 3 slices is equal to

3(45°)=135°

By proportion

Find out the area of 3 slices

Let

x ----> the area of 3 slices

\frac{25\pi}{360}=\frac{x}{135}\\\\x=25\pi(135)/360\\\\x=\frac{3,375}{360}\pi\ in^2

Simplify

\frac{75}{8}\pi\ in^2 ----> exact value of the area of 3 slices

Find out the approximate value of the area of 3 slices

assume

\pi =3.14

substitute

\frac{75}{8}(3.14)=29.4\ in^2

5 0
4 years ago
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