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Norma-Jean [14]
3 years ago
12

A convex polyhedron has faces that consist of 30 squares, 20 hexagons, and 12 octagons. The polyhedron has 120 vertices. How man

y edges does it have? Euler’s formula: V + F = E + 2
Mathematics
2 answers:
Pie3 years ago
5 0

Answer:

180 is correct

Step-by-step explanation:

saw5 [17]3 years ago
4 0

Add the total faces: 30 + 20 + 12 = 62

Using the given equation: V + F = E +2

You have F = 62, V = 120

Now solve for E:

120 + 62 = E +2

Simplify:

182 = E +2

Subtract 2 from both sides:

E = 182 - 2

E = 180

It has 180 edges.

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Mars Gravitational Force : 3.711m/s

So an object or person on Mars would weigh 37.83% its weight on earth. Therefore, a person would be much lighter on mars. A person is about 62.17% heavier on earth than on Mars.
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9x+12x-21=27<br> How do I solve ?
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3 years ago
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3 years ago
Julie is trying to choose between two packs of cookies. Pack A has 36 cookies for $5.90. Pack B has 24 cookies for $4.10. Which
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Answer:

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Step-by-step explanation:

7 0
3 years ago
Urgent help required with right triangle trig
mixas84 [53]

To find the area of a square with it's diagonal, there's actually a formula = (1/2)d², but here's how to do it if you don't have the formula:


The diagonal <em>c</em> separates the square into two of the same triangles. Therefore, we can apply Pythagorean Theorem


a²+b²=c² ← Since this is a square, a=b is a must

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2a²= 26² ← 26²=676, then divide 2 on both sides

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