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Lapatulllka [165]
3 years ago
8

What is the volume of the pyramid?

Mathematics
1 answer:
xeze [42]3 years ago
6 0

<u>Given</u>:

Given that the base of the triangle is 17 inches.

The height of the triangle is 10 inches.

The height of the triangular pyramid is 20 inches.

We need to determine the volume of the pyramid.

<u>Area of the base of the pyramid:</u>

The area of the base of the pyramid can be determined using the formula,

B=\frac{1}{2} bh

Substituting b = 17 and h = 10, we get;

B=\frac{1}{2}(17)(10)

B=85 \ in^2

Thus, the area of the base of the pyramid is 85 square inches.

<u>Volume of the pyramid:</u>

The volume of the pyramid can be determined using the formula,

V=\frac{1}{3}Bh

where B is the area of the base of the pyramid and h is the height of the pyramid.

Substituting B= 85 and H = 20, we get;

V=\frac{1}{3}(85)(20)

V=\frac{1}{3}(1700)

V=567 \ in^3

Thus, the volume of the given triangular pyramid is 567 cubic inches.

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<h3>Answer:  cos(76)</h3>

=========================================================

Explanation:

The original expression is of the pattern cos cos + sin sin. This pattern matches the second identity in the hint. Specifically, we'll say the following:

cos(A - B) = cos(A)cos(B) + sin(A)sin(B)

cos(A)cos(B) + sin(A)sin(B) = cos(A - B)

cos(94)cos(18) + sin(94)sin(18) = cos(94 - 18)

cos(94)cos(18) + sin(94)sin(18) = cos(76)

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We can verify this by use of a calculator. Make sure your calculator is in degree mode.

  • cos(94)cos(18) + sin(94)sin(18) = 0.24192
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Both expressions give the same decimal approximation, so this helps confirm the two expressions are equal. You could also use the idea that if x = y, then x-y = 0. Through this method, you'll subtract the left and right hand sides and you should get (very close to) zero.

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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The equation of a line is y=mx+b, where 'm' is the slope.

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To find the slope, as well 'b' we need points from the line, those will be (-6,-5), (0,7) as (x2,y2) and (x1,y1) respectively

Evaluating those point in the formula we have 'm' =2

Using now the above result and the point (0,7) in the equation y=mx+b, we obtain the value for 'b'.

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Now, since our line is not part of the region, and the region is below that line, there is the < sign.

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