volume bola yang diameternya 42 cm adalah...

Jika diameternya 42 cm, maka r = 42/2 = 21 cm

Volume bola
= 4/3 . phi . r^(3)
= 4/3 . 22/7 . 21^(3)
= 4/3 . 22/7 . 9.261
= 4/3 . 22 . 1.323
= 38.803 cm^(3)

r = 42 : 2
= 21 cm

Volume bola
= 4/3 × phi × r³
= 4/3 × 22/7 × r × r × r
= 4/3 × 22/7 × 21 × 21 × 21
= 88 × 9261 / 21
= 814.968 / 21
= 38.808 cm³

Smoga membantu :) ^ ^