Odpowiedź:
zad1
a) P=(a+b)×h/2= (⁴+⁸)×⁵/2÷¹²×⁵/2=30
b)e×f/2=¹²×⁴/2=24
c)a×h=6×4=24
d)a×b=8×4=36
e)(a+b)×h/2=(⁹+⁶)×⁴/2=¹⁵×⁴/2=30
f)a×h/2=⁵×⁷/2=³⁵/2÷17½
zad2
P=(²⁰+⁶)×⁴/2=²⁶×⁴/2=52
zad3
P=e×f/2=⁶×⁶/2=18
zad4
a)P=(⁸+¹²)×⁷/2=²⁰×⁷/2=70
b)6×10=60
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Odpowiedź:
zad1
a) P=(a+b)×h/2= (⁴+⁸)×⁵/2÷¹²×⁵/2=30
b)e×f/2=¹²×⁴/2=24
c)a×h=6×4=24
d)a×b=8×4=36
e)(a+b)×h/2=(⁹+⁶)×⁴/2=¹⁵×⁴/2=30
f)a×h/2=⁵×⁷/2=³⁵/2÷17½
zad2
P=(²⁰+⁶)×⁴/2=²⁶×⁴/2=52
zad3
P=e×f/2=⁶×⁶/2=18
zad4
a)P=(⁸+¹²)×⁷/2=²⁰×⁷/2=70
b)6×10=60