1)1.24:3,1 +12:0.25 -2:25 + 18:0,45=0,4+48-0,08+40=88,48
2) S=a×b
b=s:a
b=5,12:3,2=1,6
P=2(a×b)
P=2(3,2+1,6)
P=9,6
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Answers & Comments
1)1.24:3,1 +12:0.25 -2:25 + 18:0,45=0,4+48-0,08+40=88,48
2) S=a×b
b=s:a
b=5,12:3,2=1,6
P=2(a×b)
P=2(3,2+1,6)
P=9,6