All categories

3 years ago

The base of a pyramid has n sides. Write an EXPRESSION for the number of faces of the pyramid.

2 answers:

3 0

In general, if the pyramid has 'x' sides, then it will have 'x' lateral faces. Total Number of Faces = Number of Base Faces + Number of Lateral Faces. Total Number of Faces = 2 + x. So the formula is F=x%2B2 where "x" is the number of sides that the pyramid has and "F" is the total number of faces.

Anvisha [2.4K]3 years ago

3 0

Answer: The expression for number of faces of a pyramid =1+n

Step-by-step explanation:

A Pyramid is a polyhedron or a three dimensional shape having a polygon base and all lateral faces are triangles .

Its base describe the number of other faces of it.

For example a triangular pyramid has a triangular base which gives rise to 3 lateral faces , and a rectangular pyramid has a rectangular base which give rise to 4 lateral faces and so on.....

So the total number of faces in a pyramid = base + lateral faces

If a pyramid has n sides therefore it give rise to n lateral faces such that

The total number of faces in a pyramid= 1+n .

You might be interested in

Domain of f(x)=(1/4)^x

Bumek [7]

Answer: B. All real numbers

Step-by-step explanation:

See attached image.

3 0

2 years ago

Convert 4π/3 radians to degrees. 1. 135° 2. 180° 3. 240° 4. 60°

Ostrovityanka [42]

Answer; #3, 240 would be your correct answer

5 0

3 years ago

Read 2 more answers

Please help with number 7

DedPeter [7]

Answer:

Step-by-step explanation:

cos 2α=1-2 sin² α

$sin \alpha =\sqrt{\frac{1-cos2\alpha }{2} } \\put~ \alpha =\frac{\pi }{8} \\2\alpha =\frac{\pi }{4} \\cos 2\alpha =cos \frac{\pi }{4}=\frac{1}{\sqrt{2} } \\\\sin(\pi/8)=\sqrt{\frac{1-\frac{1}{\sqrt{2} } }{2}} =\sqrt{\frac{\sqrt{2}-1 }{2\sqrt{2} }$

6 sin 3 \theta+6 sin \theta

$6 sin 3 \alpha +6 sin\alpha =6(sin 3\alpha +sin \alpha )\\=6 *2sin \frac{3\alpha+\alpha }{2} cos \frac{3\alpha-\alpha }{2} \\=12 sin 2\alpha cos \alpha$

please change α to \theta

5 0

3 years ago

A customer buys 8.94 in gas plus three packs of cigarettes for 3.89 each and gives you 50.15 what is his or her change

ycow [4]

3.89 x 3 = 11.67
8.94 + 11.67 = 20.61
50.15 - 20.61 = 29.54

$29.54 would be the change.
Hope it helps!

7 0

3 years ago

Select all of the ratios that are equivalent to 4 to 7.

tatyana61 [14]

Answer:

the only one that i know is 16/28

Step-by-step explanation:

6 0

3 years ago