21) B. 4.710 cm³
= 1/2 x 3,14 x (10 cm)² x 30 cm
= 3,14 x 100 cm² x 15 cm
= 314 cm² x 15 cm
= 4.710 cm³
24) C. 744 cm²
No. 19, 24, 25 aku tak tahu :(
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21) B. 4.710 cm³
= 1/2 x 3,14 x (10 cm)² x 30 cm
= 3,14 x 100 cm² x 15 cm
= 314 cm² x 15 cm
= 4.710 cm³
24) C. 744 cm²
No. 19, 24, 25 aku tak tahu :(