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P=(10√3+20√3)*2√2 /2
P=(30√3)*2√2 /2
P=60√6 /2
P=30√6
2. 8√6:2=4√6
P=(4√6+8√6)*5√3 /2
P=(12√6)*5√3 /2
P=60√18 /2 √18=√9*3=3√3
P=60*3√3 /2
P=180√3 /2
P=90√3
Proszę :))