hugomimihu

So for the 2 sides with 12 posts - we have 12-1 = 11 in betweens, and for 20 posts, 20-1 = 19.

The total "in-betweens" is 2*(19+11 ) = 2* 30 = 60

So 3 levels, so 60 * 3 * 12 meters = 180 * 12 = 2160

There are 20 + 20 + (12-2) + (12-2) = 20 +20 + 10 + 10 = 60 posts.

60* 0.5 = 30

2160 + 30 = 2190

If you don't understand anything feel free to ask. :)

l*w = 28

2(l+w) = 22

so l+w = 11

factor pairs of 28:

1,28

2,14

4,7

4+7 = 11!

Dimensions: 4*7

There are a total of 30 animals, and 10 humans, since 30 -20 = 10.

There are 20 cats and birds, 70 - 10*2 = 50 legs, and 20 tails.

So 4c + 2b = 50

c + b = 50

If there are 10 cats, 10 birds, we have 40 + 20 legs

Too much. 8 cats 12 birds, 32 + 24 = 56 legs.

Each time we remove a cat and add a bird we have 2 less legs. 60-50 = 10, 10/2 = 5/

10-5 = 5cats, 15 birds.

20 + 30 = 50

5 cats

If you don't understand anything feel free to ask.

You have asked this question recently, do not repost so fast.

The volume is base * height, so (14/2)^2 * pi * h = 112pi

7^2 = 49

49π * h = 112π

h = 112π / 49π

You divide that and that's the height.

Hello

Just a reminder that it's supposed to be rounded to nearest tenth but I figured guest can do that him/her self.

:)

The volume of a cone is π * r^2 * h/3

So we have π * 1.2 ^ 2 * 2.9/3

Going into the calculator gives 

Around 4.373.

If you don't understand anything feel free to ask.