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a =3
b = 4 = h trójkąta
h = 3 trapez
1.
1/2 *a*h=P
1/2 * 3 * 4 = 6
2.
a*b=P
3*4 = 12
3.
(a+b)/2 * h = (3+4)/2 * 3 = 7/2 * 3 = 21/2 = 10 1/2
A=3x4/2-6cm kwadratowych
B=3x4-12cm kwadratowych
C=(3+4)x3/2-7x3=21/2=10,5cm kwadratowych
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a =3
b = 4 = h trójkąta
h = 3 trapez
1.
1/2 *a*h=P
1/2 * 3 * 4 = 6
2.
a*b=P
3*4 = 12
3.
(a+b)/2 * h = (3+4)/2 * 3 = 7/2 * 3 = 21/2 = 10 1/2
A=3x4/2-6cm kwadratowych
B=3x4-12cm kwadratowych
C=(3+4)x3/2-7x3=21/2=10,5cm kwadratowych