Tylko a i b, zadanie w załączniku. : )
a) P=a*h/2
P=8*h/2=4h
40=4h
h=10
b) 1/2P=30
p=a*h/2
30=a*12/2
6a=30
a=5
a)
P = ½ a*h
40 = ½ * 8 * h
4h = 40 /:4
h = 10
b)
13² = 12² + x²
169 = 144 + x²
x² = 169 – 144
x² = 25
x = √25
x = 5
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a) P=a*h/2
P=8*h/2=4h
40=4h
h=10
b) 1/2P=30
p=a*h/2
30=a*12/2
6a=30
a=5
a)
P = ½ a*h
40 = ½ * 8 * h
4h = 40 /:4
h = 10
b)
P = ½ a*h
13² = 12² + x²
169 = 144 + x²
x² = 169 – 144
x² = 25
x = √25
x = 5