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massa kelereng = 20 g = 0,020 kg
Kita cari volume kelereng
V = 4/3 x 22/7 x 7x7x7
=(4x 22x 49)/3
= 1437,33cm³
= (1437,33 / 1000000) m³
= 0,00143733 m³
massa jenis kelereng = massa/ volume
= 0,020/0,00143733
= 13,924377 kg/m³
jawab
massa jenis kelereng tersebut adalah
13,92 kg/m³ ( pembulatan 2 tempat desimal)
bersyukurlah !
Selamat belajar !