P=a*h
48 = a * 6
48 = b * 4
a = 8
b=12
Obw = 2a+2b = 24 + 16 = 40cm
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P=a*h
48 = a * 6
48 = b * 4
a = 8
b=12
Obw = 2a+2b = 24 + 16 = 40cm
b= drugi bok
h₁=wysokośc opuszczona na a=6cm
h₂=wysokośc opuszczoona na b=4cm
pole=ah₁
pole=bh₂
48cm²=a×6
a=48:6
a=8cm
48=b×4
b=48:4
b=12cm
obwód=2a+2b=2×8+2×12=40cm
a?
b?
h1=6
h2=4
48=6*a
6a=48
a=8
48=4*a
4a=48
a=12
Ob=2*8+2*12=16+24=40[cm]
Odp. Obwod wynosi 40cm