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Twierdzenie Pitagorasa a2+b2=c2
144+81=c2
c=/225 [pierwiastek]
c=15
odp. Wysokosc wynosi 15 cm.
pole=½ab
pole=½×12×9
pole=54cm²
z pitagorasa oblicz c
c²=12²+9²
c²=144+81
c=√225
c=15cm
pole=½ch
54=½×15h
h=54:7,5
h=37,2cm i tyle = sie ta wysokośc
P=1/2(12*9)
P=54
a²+b²=c²
12²+9²=c²
144+81=225
√225=25
P=1/2(a*h)
P= 1/2(25*h)
54=1/2 (25*h)|*1/2
108=25*h |÷25
h=4,32