Ответ:
P= 60cm
обьяснение:
a=2s/h(a)=300:15=20
b=2s/h(b)=300:12=25
c=2s/h(c)=300:20=15
P=a+b+c= 20cm+25cm+15cm=60cm
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Ответ:
P= 60cm
обьяснение:
a=2s/h(a)=300:15=20
b=2s/h(b)=300:12=25
c=2s/h(c)=300:20=15
P=a+b+c= 20cm+25cm+15cm=60cm