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Mariana [72]
3 years ago
10

A square pyramid has a base length of 6 inches. The height of each triangular face is 11 inches. Which expressions correctly cal

culate the surface area of the pyramid
Mathematics
1 answer:
VMariaS [17]3 years ago
7 0

Answer:

168 in²

Step-by-step explanation:

The square would be 36 in²

Area of a triangle is A= 1/2 bh

A = 1/2 (11 x 6), A= 1/2 (66)

1/2 (66) = 33 in², which is the area of a triangle.

Then you multiply 33 x 4 to get the area of all the triangles, which is 132 in²

You add the area of the square to the area of the triangles, which is 168 in².

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Romashka-Z-Leto [24]

Answer:

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Step-by-step explanation:

The formula fo an area of a triangle:

A=\dfrac{bh}{2}

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We have

x - base

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Substitute:

A=\dfrac{(x)(6x)}{2}=\dfrac{6x^2}{2}=3x^2

4 0
3 years ago
The scale of a map is 1 inch: 250 miles. City A is 378 miles from City B. To the nearest tenth, how far is its distance on the m
juin [17]
This is a proportion question. We can express this as an equation where the answer is x:

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From there, you can just cross-multiply and divide to get:

\frac{1 * 378}{250}

A tenth of 250 is 25, so this is roughly \frac{375}{250} or \frac{17}{10}, so it'll be approximately 1.7 inches on the map.
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3 years ago
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Lubov Fominskaja [6]

Answer:

.2

Step-by-step explanation:

If you multiply 2.5 x .2 you get .5 meaning .2 is the scale factor

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Katarina [22]

Answer:

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