penyelesaian :
22) luas = 2 (p x l + p x t + l x t)
= 2 (13 x 9 + 13 x 8 + 9 x 8)
= 2 (117 + 104 + 72)
= 2 x 293
= 586 cm² (A)
23) volume = π x r² x t
= 3,14 x 50² x 100
= 3,14 x 2.500 x 100
= 785.000 cm³ (1 liter = 1.000 cm³)
= 785 liter (D)
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penyelesaian :
22) luas = 2 (p x l + p x t + l x t)
= 2 (13 x 9 + 13 x 8 + 9 x 8)
= 2 (117 + 104 + 72)
= 2 x 293
= 586 cm² (A)
23) volume = π x r² x t
= 3,14 x 50² x 100
= 3,14 x 2.500 x 100
= 785.000 cm³ (1 liter = 1.000 cm³)
= 785 liter (D)
= (2×13×9) + (2×9×8) + (2×13×8)
= 234 + 144 + 208
= A. 586 cm²
23. 1 meter= 1×10= 10 liter
50 cm= 50/10= 5 liter
VT= π×r×r×T
= 3,14×5×5×10
keterangan: LPB= Luas Permukaan Balok
VT= Volume Tabung