S = 1/2ab * simc
S = 1/2ah
S = 1/2bcsimA
sinc = h/b
1/2absimc = 1/2bcsinA
a/simA = b/simB = c/simC = 2R
S = absimc
h = b * simc
S = 1/2absimc
a/sinA = c/sinC

ա) Ab = 6√8սմ
AC = 4սմ
∡A = 60^o
S = 1/2absinc
S = 1/2 * 6√8 * 4 * √3/2 = 6√24 = 12√6սմ²

բ) BC = 3սմ
AB = 18√2սմ
∡B = 45^o
S = 1/2absinc
S = 1/2 * 18√2 * 3 * √2/2 = 27սմ²

NEF Student’s Book Reading slide 105, Murder mysteries, read the story, write down all the unknown words, and learn.

brutal — դաժան

foggy — մառախլապատ

inhabitants — բնակիչներ

remained — մնաց

suspect — կասկածելի

considerable — զգալի

This question is a bit difficult, but I think that yes, we can make our own luck. Everything in our lives depends only on us. Everyone and everything will disappear someday, so we should try to only believe and trust ourselves. There are many people that think that luck will come someday even though they do nothing about it. Or they think that just some people are born lucky. That’s not right, we should focus on ourselves and on what we do in life, our activities, we should try not to rely on others every time to achieve our goal. Despite all this, I think luck is like random, you don’t know what will happen, will you be lucky this time or not and so on. We can only cause luck by something.