Obw=2a+2ba=7cmObw=40cmb=(40-14)/2=13 cm
obw = 40 cm
a = 7 cm
b = ?
7 cm x 2 = 14 cm
40cm - 14 cm = 26 cm
b = 26 cm : 2 = 13 cm
b = 13 cm.
ma nadzieję że pomogłam. ; ]]
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Obw=2a+2b
a=7cm
Obw=40cm
b=(40-14)/2=13 cm
obw = 40 cm
a = 7 cm
b = ?
7 cm x 2 = 14 cm
40cm - 14 cm = 26 cm
b = 26 cm : 2 = 13 cm
b = 13 cm.
ma nadzieję że pomogłam. ; ]]