KTOLONG DI BANTU 25 POIN​

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KTOLONG DI BANTU 25 POIN​

KTOLONG DI BANTU 25 POIN​

Nomor 9

  • Selisih

V1 – V2

= ( 18 × 18 × 18 ) – ( 15 × 15 × 15 )

= ( 324 × 18 ) – ( 225 × 15 )

= 5.832 cm³ – 3.375 cm³

= 2.457 cm³ (a)

Nomor 10

  • Panjang Rusuk

v = r³

39.304 liter = r³

39.304 dm = r × r × r

r³ = ³√39.304 dm

r = 34 dm (a)

Nomor 11

  • Volume Limas

v = ⅓ × la × t

v = ⅓ × ( 12 cm × 5 cm ) × 18 cm

v = ⅓ × 60 cm² × 18 cm

v = ⅓ × 1.080 cm

v = 360 cm³ (c)

Nomor 12

v = la × t

v = ( ½ × 8 cm × 4 cm ) × 12 cm

v = ( 4 cm × 4 cm ) × 12 cm

v = 16 cm² × 12 cm

v = 192 cm³ (d)

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