Answer:
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Step-by-step explanation:
A = (12 x 8 x 3) + (1/2 x 8 x 6.9) + (1/2 x 8 x 7 x 3)
A = 288 + 27.6 + 84
A = 399.6 m²
Answer:
f(0,0)=ln19
Step-by-step explanation:
is given as continuous function, so there exist 
and it is equal to f(0,0).
Put x=rcosA annd y=rsinA
we know that 
, so we have that
So f(0,0)=ln19.
32+48 = 80
Four equivalent expressions are:
40+40 = 80
20+60 = 80
10+70 = 80
30+50 = 80
