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d=6
d=a√2
a√2=6
a=3√2
Zadanie 2 .
P=(a+b)*h/2
P=(6,4+3,8)*8/2
P=(6,4+3,8)*4
P=10,2*4
P=40,8
Zadanie 3 .
P=a*h/2
2P=a*h
a=2P/h
a=12,6/4,2
a=3
Zadanie 4.
P=e*f/2
P=5*3,5/2
P=8,75
Zadanie 5 .
Tu brakuje danych
Zadanie 6 .
P=a*h
h=P/a
h=12,5/2,5
h=6,25
Zadanie 7 .
P=a*h/2
P=8*7,4/2
P=4*7,4
P=29,6
P = 1/2 d²
d = 6 cm
P = 18 cm²
2.
P = 1/2 * h (a+b)
a= 6,4 cm
b = 3,8 cm
h = 8 cm
P = 1/2 * 8 cm (3,4 cm + 6,4 cm)
P = 4 cm * 9,8 cm
P = 39,2 cm²
3.
P = 1/2 a * h
h = 4,2 cm
P = 6,3 cm²
6,3 cm² = 1/2 * a * 4,2 cm
6,3 cm² = 2,1 cm a | : 2,1 cm
a = 3 cm
4.
P = 1/2 d₁ * d₂
d₁ = 5 cm
d₂ = 3,5 cm
P = 1/2 * 5 cm * 3,5 cm
P = 8,75 cm²
5.
P = 1/2 a * h
a = 4,2 cm
gdzie reszta danych?
6.
P = a * h
a = 2,5 cm
P = 12,5 cm²
12,5 cm² = 2,5 cm * h | :2,5 cm
h = 5 cm
7.
P = 1/2 a * h
a = 7,4 cm
h = 8 cm
P = 1/2 * 8 cm * 7,4 cm
P = 29,6 cm²