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2 years ago

Find the total area for the regular pyramid. T. A. =

Mathematics

1 answer:

Volgvan2 years ago

3 0

Answer:

The answer to your question is Superficial area = 144 + 36√3

Step-by-step explanation:

Process

1.- Calculate the area of the base

Area = base x height / 2

-Calculate the height using the Pythagorean theorem

h² = 12² - 6²

h² = 144 - 36

h² = 108

h = √108

108 2

54 2

27 3

9 3

3 3

h = 6√3

Area = 12 x 6√3/2

Area = 36√3 u²

2.- Calculate the area of the superficial 3 triangles

Area = base x height / 2

-Calculate the height using the Pythagorean theorem

h² = 10² - 6²

h² = 100 - 36

h² = 64

h = 8

Area = 12 x 8/2

Area = 48 u²

Total area = 3(48) + 36√3

= 144 + 36√3

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2 years ago

Interpret the meaning of the point (9, 378).

lions [1.4K]

Answer:

it means the the line falls on 9 on the x-axis

and intersects at 378 on the y-axis

Step-by-step explanation:

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7 0

2 years ago

Ronnie wants to lower his utility bills to save money on his monthly expenses. He discovers that if he replaces his water heater

Soloha48 [4]

Alright, lets get started.

Last year, Ronnie's utility expenses were = 1935.67 $

After switching to electric water heater to solar water heater, his yearly utility bills get reduced.

This year, Ronnie's utility expenses are = 862.40 $

So the difference on utility bills Ronnie saved = $1935.67 - 862.40$

so, difference Ronnie saved = 1073.27 $

So, the percentage of amount Ronnie saved = $\frac{1073.27}{1935.67} *100$

Percentage of amount Ronnie saved = 55.45 %

Hence, 55.45 % Ronnie save on his utlility bills by switching to a solar water heater. : Answer

Hope it will help :)

5 0

1 year ago

Read 2 more answers

Big Time Movers charges an initial fee of $24.50, plus $12.75 an hour for their moving services. On holidays, they charge 2.5 ti

Julli [10]

Answer:

4 hours

Step-by-step explanation:

This equation represents the data:

2.5(12.75x + 24.50) = 188.75

31.875x +61.25 = 188.75 . . . . . eliminate parentheses

31.875x = 127.50 . . . . . . . . subtract 61.25

x = 4 . . . . . . . . . . . . . . . . . . . divide by 31.875

Big Time Movers worked 4 hours on New Year's Day.

6 0

2 years ago

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If the third term in an arithmetic sequence is 7 and the common difference is -5, what is the value of the fourth term?

pochemuha

The is Answer:

Explanation:

We observe that difference between first and second terms =12−5=7
Similarly difference between second and third terms =19−12=7

It shows that the given sequence of numbers is an arithmetic progression with common difference equal to 7.

We know that nth term of an AP whose first term is a1 and whose common difference is d is given by
an=a1+(n–1)d

To find the 12th term, insert given values in the general expression
a12=5+(12–1)7
a12=5+(11)7=5+77=82

4 0

2 years ago

Read 2 more answers