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zad 16
r^2=3^2+4^2;
r^2=25
r=5;
zad 15

180-54=126;

126=7x;
x= 18;

alfa=54;
beta=18;
gamma=108;

zad 14

x*(x+7)=60;

x^2+7x-60=0

x1=5
x2=-12 -odrzucamy długość nie może być ujemna

x+7=12;


5^2+12^2=c^2


c=13;

zad13
1:4

obw=36;

5x=18;
x=3,6;
4x=14,4
pole=3,6*14,4=51,84;

zad 12;

a=20 b=12;

tg=3;

a1=8;
tg=a1/b1;
3=8/b1;
b1=24;
P=(20+12)*24/2
p=32*12
pole=384;

zad 11
a=4;
h1=4* sqrt(3)/2

h2^2=4^2-(4*sqrt(3)/2)^2
h2^2=16-(16*3/4)
h2^2=4
h2=2;

Pole=(2*4* sqrt(3)/2)/2
Pole=4* sqrt(3)/2

zad 10
|AD|=a;
2a=6
|AD|=3;
zad 9
beta=2alfa;
3alfa=186;
alfa=62;
beta=124;

zad 8
alfa=(360-160)/2
alfa=100;

zad 7

20/32=x/(x+24)

20*(x+24)=32x;
20x+480=32x;
480=12x;
x=40
|ED|=40;

zad 6
a-liczba przekatnych
n(n-3)/2=a;
8(8-3)/2=a
40/2=a;
a=20;

zad 5;

p=6*(a^2sqrt(3)/4)
36sqrt(3)=6*(a^2sqrt(3)/4)/6
6sqrt(3)=a^2sqrt(3)/4 /*4
24sqrt(3)=a^2sqrt(3) / sqrt(3)
24=a^2
a=2sqrt(6)

zad 4
15 sqrt(3)=h
h=a*sqrt(3)/2
15 *sqrt(3)=a*sqrt(3)/2 /*2
30* sqrt(3)=a*sqrt(3) /sqrt(3)
a=30;
obw=3*30=90;
P=30^2sqrt(3)/4
p=900sqrt(3)/4

zad 3

S-srednica
s^2=3^2+4^2;
s^2=25;
s=5;
r-promien wpisanego
P-pole
r=2*p/(a+b+c)

p=3*4/2=6
a+b+c=3+4+5=12;
r=12/12=1;

zad 2
r=1/2*a;
25 pi=pi*r^2
r^2=25
r=5
a=10;
Pole=10*10=100




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