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trapesium=25×14:2=175cm.
200+175=375cm
= 22/7×14×14
= 616 cm²
-Persegi = s×s= 21×21= 441 cm²
luas yang diarsir= 616 cm²- 441 cm²
= 175 cm²
2.) -Persegi panjang = p×l= 25×8
= 200 cm²
-Trapesium sembarang= (a+b)×t÷2
= (11+25)×17÷2
= 306 cm²
luas bangun tersebut= 200+306
= 506 cm²
3.) -Segitiga = a×t÷2
= 20×20÷2
= 200 cm²
-Lingkaran= π×r²÷2
= 3,14×20×20÷2
= 628 cm²
luas bangun tersebut= 200+628
= 828 cm²
4.) -Segitiga a×t÷2
= 20×20÷2
= 200 cm²
-Segitiga = a×t÷2
= 20×20÷2
= 200 cm²
-Lingkaran= π×r²÷2
= 3,14×20×20÷2
= 628 cm²
luas bangun tersebut= 200+200+628
= 1028 cm²
maaf kalau no.5 belum bisa, lagi males nulis sama ngitung