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= 22/7 x 3/5 x 7 x 7
= 92,4 cm²
42. L1 = p x l
= 6 x 8 = 48 cm
L2 = (a+b) x t : 2
= (6+10) x 7 : 2
= 16 x 7 : 2
= 112 : 2 = 56
Luas Gabungan = 48 + 56 = 104 cm²
44. Luas persegi panjang = 50 meter x 40 meter = 2000 x 3 = 6000 meter