Question

@Michele_Lanio

Answer 1

Can you see it?

Answer 2

here the circumference C is given by the subsequent formula:
\[C = 2 \times 3.14 \times radius = ...?\]

Answer 3

144.44?

Answer 4

ok!

Answer 5

Is that the answer?

Answer 6

yes!

Answer 7

Okay great! Do you want me to open a new post or stay on this one??

Answer 8

please wait we have to round to the nearest tenth, so the answer will be:
144.4

Answer 9

OK! Thank you! Do you want to stay in this one or open a new one?

Answer 10

we can continue into this one

Answer 11

Okay

Answer 12

This one really got me..

Answer 13

I think it's 8. But I'm not sure how to get it..

Answer 14

those triangles are similar triangles, so we can write the subsequent proportion:
\[4:x = 10:20\]

Answer 15

what is x?

Answer 16

14??

Answer 17

hint:
we have to apply the fundamental property of proportion, namely:
\[10x = 80\]

Answer 18

8!

Answer 19

yes!

Answer 20

So how did we work this out??

Answer 21

step #1 since the triangles are similar Iwe can write the proportion:
\[4:x = 10:20\]
step #2 Now we apply the fundamental property of the proportions, so we can write:
\[10x = 80\]
step #3 finally we divide both sides of the last equation by 10, and we get:
\[x = 8\]

Answer 22

Is that 4 over x = 10 over 20?

Answer 23

@Michele_Laino

Answer 24

Are you there?

Answer 25

yes! I have lost my connection.
yes! this is 4 over x = 10 over 20

Answer 26

Okay, sorry I thought you left me

Answer 27

You're awesome! I some more if you're up for it?

Answer 28

ok! I'm ready!

Answer 29

Awesome! New one this one?

Answer 30

this one!

Answer 31

OK

Answer 32

Can you see it?

Answer 33

hint:
the area of each triangle, is:
\[A = \frac{{base \times height}}{2} = \frac{{8 \times 22}}{2} = ...?\]

Answer 34

what is A?

Answer 35

Huh?

Answer 36

I'm here

Answer 37

what is A?

Answer 38

What do you mean "what is A?"?

Answer 39

A is:
\[A = \frac{{base \times height}}{2} = \frac{{8 \times 22}}{2} = ...?\]

Answer 40

It say's "Math Processing Error"

Answer 41

I rewrite my formula, please wait...

Answer 42

Okay

Answer 43

A= (base * height)/2= (8*22)/2=...?

Answer 44

88

Answer 45

ok! Now we have to keep in mind that the lateral area S is four times that area, namely:
S = 4 * 88=...?

Answer 46

352

Answer 47

since we have four of such triangles

Answer 48

ok! That's right!

Answer 49

Ready for the next one?

Answer 50

ok!

Answer 51

151.58?

Answer 52

hint: the surface of a cone can be represented as follows: