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= 2/3 x 66 x 21
= 2 x 22 x 21
= 44 x 21 = 924 cm² (b)
Kalau ini jawaban terbaik, jangan lupa ditandai yaa
Semoga membantu.
L = S × S
= 18 × 18
= 324 cm2
Bangun 2 : Segitiga
L = 1/2 × a × t
= 1/2 × 18 × 15
= 1/2 × 270
= 135 cm2
Luas bangun
L1 + L2
324 cm2 + 135 cm2 = 459 cm2 (A)
Jadi, luas keseluruhan bangun adalah A. 459 cm2. Semoga membantu yah..