Martinez39s:
In Maths, you don't just make assumptions without proof and present them as solutions. Even by mere intuitive geometric consideration, |OF| cannot equal |ON|. If |OF| = |ON|, then the circle centred at O would touch F. |ON| is the radius of the circle centred at O, how then is |OF|, which is clearly bigger that the radius of the circle centred at O, equal to |ON|?


MrShape.

Mrshape:

Yes.
Because no proof that |OF|=|ON|

Mrshape:

Were you got it wrong is the 14 you made use of.
That h was unknown

Mrshape:

If you get it j will give you more shapes to solve as a reward.
What else does Mr shape has to offer

Mrshape:

Show diagram

PhenomenalMorgan:



Activated charcoal is charcoal that has been treated by heat or chemical substances or both, so that its surface area increases and it is able to adsorb substances like dirt or toxins.
There are many styles of producing it but a popular method is to dip grounded charcoal in a Calcium Chloride solution for some time followed by heating and drying. This process "activates" the charcoal and opens up pores in its surface so it can better adsorb dirt in the teeth, drinking water or toxins in the stomach..

Anoniemos01:

Normal charcoal is wood or any carbon material that has been burnt the normal way—black charred..
Activated charcoal is any 'charcoal' heated in the presence of a gas or chemical that will allow the charcoal obtain more tiny holes or pores in order to serve as an effective adsorbent — by absorbing poisonous gases and stuff when used.
Though all normal charcoals have to a certain extent an adsorbing power(ability to stuck-in gases), the greatest of them all is the activated charcoal and it is for this reason that it is used for whitening the teeth(as it is believed to adsorb poisonous substances) but the actual fact is that many claims of its uses haven't been verified..

Besides, activated charcoal has it side-effects too—especially when ingested so, I think it'll do everyone some good to know that charcoal or whatever shouldn't just be ingested anyhow.

PhenomenalMorgan:


Its only ACTIVATED CHARCOAL that can be used for what the OP mentioned... Normal charcoal cannot!!

naturalwaves:

Yes, I know
Sure.

This is not possible bro because the tower is due North of point D and as such cannot be 35 degrees. When one point is due north of another, it has ot be straight up and cannot make an angle of 35 degrees.
The tower is north of point D, ie directly in front of D. It is not the whole tower that is at an angle of elevation of 35 degrees from point D. It is the top of the tower(point B) that is at an angle of elevation from D. You seem smart at Maths and should be able to understand the difference with ease
The only mistake you are making is that you did not think about the fact that the top of the tower was the initial reference point. I have attached some diagrams on the first page. Check them out

naturalwaves:

Bro, in your diagram, C,A,D are not on the same horizontal plane.

naturalwaves:

This is still wrong bro. What angle is supposed to be made by a point due East of another point?