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3 years ago

Find the total area for the pyramid with the equilateral base. T. A. =

Mathematics

2 answers:

Anon25 [30]3 years ago

8 0

Answer:

the answer is 144+36 square root 3

Step-by-step explanation:

iogann1982 [59]3 years ago

4 0

Answer:

36√3 + 144

Step-by-step explanation:

Given that,

base of the pyramid is an equilateral triangle with sides = 12

Formula to calculate total surface area of pyramid

<h3>[Base Area] + 1/2 × Perimeter × [Slant Length]</h3>

Base Area

1/2 (height) (base)

1/2 (√12²-6²)(12)

6(6√3)

36√3

perimeter of base

sum of all sides = 12 + 12+ 12

= 36

slant height = √10²-6²

= 8

put all these values in the formula above

36√3 + 1/2(36)(8)

36√3 + 144

Total area for the pyramid with the equilateral base =

36√3 + 144

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3 years ago

A line passes through the points (-6, 4) and (-2, 2). Which is the equation of the line?

cupoosta [38]

Answer:

$\displaystyle y=-\frac{1}{2}x+1$

Step-by-step explanation:

The equation of any line in slope-intercept form is:

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$\displaystyle m=\frac{2-4}{-2+6}=\frac{-2}{4}=-\frac{1}{2}$

The equation of the line is, so far:

$\displaystyle y=-\frac{1}{2}x+b$

To calculate the value of b, we use any of the given points, for example (-6,4):

$\displaystyle 4=-\frac{1}{2}(-6)+b$

$\displaystyle 4=3+b$

Solving:

b = 1

The equation of the line is:

$\boxed{\displaystyle y=-\frac{1}{2}x+1}$

We can see none of the choices is correct.

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3 years ago

What is a joint relative frequency

Iteru [2.4K]

[Rewritten and Fixed]

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3 years ago

PLEASE help me answer this question. Can anyone do this on paper, write step by step, and send the pile photo to me? Or just an

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To find the diagonal you do
side x the square root of 2
so your answer would be

8 1/2

Hope this helps ;)

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2 years ago