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5. luas 1 = 18 x 12 = 216 cm²luas 2 = 1/2 x 10 x 12 =60 cm²
luas seluruhnya 216 + 60 = 276 cm²
6. luas 1 = 15 x 40 = 600 cm²
luas 2 = 20 x 7 = 140 cm²
luas seluruhnya 600 + 140 = 740 cm²
7. luas = 1/2 x phi x r²
= 1/2 x 22/7 x 14²
= 308 cm²
=216cm²+60cm²
=276cm²
6. (40cmx15cm)+(7cmx20cm)
=600cm²+140cm²
=740cm²
7. 1/2x22/7x14cmx14cm
=308cm²
semoga membantu !
maaf ya kalo salah atau kurang jelas !
pleaaaaaaaaaase jadiin jwbn terbaik ya !