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LenKa [72]
3 years ago
10

A square pyramid is shown below I need this done soon and now So The BRAINLEST points are high​

Mathematics
1 answer:
ivolga24 [154]3 years ago
3 0

Answer:

\large\boxed{S.A.=61.25\ cm^2}

Step-by-step explanation:

We have the square and four congruent triangles.

The formula of an area of a square with side a:

A_{square}=a^2

The formula of an area of a triangle:

A_{triangle}=\dfrac{bh}{2}

b - base

h - height

SQUARE:

A_{square}=(3.5)^2=12.25\ cm^2

TRIANGLE:

A_{triangle}=\dfrac{(3.5)(7)}{2}=\dfrac{24.5}{2}=12.25\ cm^2

Surface Area of the square pyramid:

S.A.=A_{square}+4A_{triangle}

Substitute:

S.A.=12.25+4(12.25)=12.25+49=61.25\ cm^2

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3 years ago
Zachary went to the store to buy some walnuts. The price per pound of the walnuts is
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3 years ago
Find the distance between the points. (Round your answer to two decimal places. (9.7, - 2.8), (- 3.2, 8.8)
Dmitry [639]

Answer:

Rounding it to two decimal places, we get distance, d=17.35

Step-by-step explanation:

Given:

The two points are (9.7, -2.8)\textrm{ and }(-3.2, 8.8)

The distance between the two points can be obtained using the distance formula which is given as:

d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Here, for the points, (9.7, -2.8)\textrm{ and }(-3.2, 8.8)

x_{1}=9.7,x_{2}=-3.2,y_{1}=-2.8,y_{2}=8.8

Therefore, the distance between the points is:

d=\sqrt{(-3.2-9.7)^2+(8.8-(-2.8))^2}\\d=\sqrt{(-12.9)^2+(8.8+2.8)^2}\\d=\sqrt{(12.9)^2+(11.6)^2}\\d=\sqrt{166.41+134.56}\\d=\sqrt{300.97}=17.348

Rounding it to two decimal places, we get d=17.35

7 0
3 years ago
Trey had 440 songs on his mp3 player.now he has 473 songs.what is the percent of increase in the number of songs on his mp3 play
olga55 [171]

Answer:

There is 7.5% increase in the number of songs on his mp3 player.

Step-by-step explanation:

Original Songs in mp3= 440 songs

Final Songs in mp3= 473 songs

We need to find percent of increase in the number of songs on his mp3 player.

The formula used is: Percent \ of \ increase = \frac{Final \ Value \ -\ Original \ Value}{Original \ Value} \times 100

Now putting values and finding percent of increase

Percent \ of \ increase = \frac{Final \ Value \ -\ Original \ Value}{Original \ Value} \times 100\\Percent \ of \ increase = \frac{473-440}{440} \times 100\\Percent \ of \ increase = 7.5\%

So, there is 7.5% increase in the number of songs on his mp3 player.

7 0
3 years ago
What is 0.04 as a percent? PLEASE ANSWER ASAP
Cerrena [4.2K]

0.04 would equal 4 percent

5 0
3 years ago
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