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=p.l+1/2(vi)(r^2) =(15×21)+1/2(3,14)(10.5)^2
=325+137,09= 462,09 cm^2
2.L=Lpersegipnjg-1/2Llingkaran
=(22×14)-1/2(22/7)(7)(7)
=308-77=231 cm^2