sebuah kaleng cat berdiameter 14 cm ,t=10 cm brp v. 8 kaleng cat?
Jawaban:
Diameter kaleng besar = 28 cm, maka jari-jarinya adalah 14 cm.
Diameter kaleng kecil = 14 cm, maka jari-jarinya adalah 7 cm.
table attributes columnalign right center left columnspacing 0px end attributes row cell Banyak space kaleng space kecil end cell equals cell fraction numerator Volume space kaleng space besar over denominator Volume space kaleng space kecil end fraction end cell row blank equals cell fraction numerator straight pi open parentheses r subscript besar close parentheses squared t subscript besar over denominator straight pi open parentheses r subscript k e c i l end subscript close parentheses squared t subscript k e c i l end subscript end fraction end cell row blank equals cell fraction numerator open parentheses r subscript besar close parentheses squared t subscript besar over denominator open parentheses r subscript k e c i l end subscript close parentheses squared t subscript k e c i l end subscript end fraction end cell row blank equals cell fraction numerator 14 squared cross times 60 squared over denominator 7 squared cross times 20 squared end fraction end cell row blank equals cell fraction numerator 14 cross times 14 cross times 3600 over denominator 7 cross times 7 cross times 400 end fraction end cell row blank equals cell 2 cross times 2 cross times 9 end cell row blank equals cell 36 space buah end cell end table
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