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=(7+7)*7+(30-7)*7
=14*7+23*7
=98+161
=259 cm²
3. trapesium+persegi
=(8+14)*5/2+8*8
=22*5/2+64
=110/2+64
= 55+64
=119 cm²
4. jajar genjang+persegi
=15*8+6*6
=120+12
=132 cm²
5. luas persegi=10*10=100 cm²
luas yg diarsir
=2*luas trapesium
=2*(5+10)*5 / 2
=2*15*5/2
=2*37,5
=75 cm²