2. Di dalam sebuah lukisan dinding, panjang sebatan
pensel ialah 150 cm. Jika panjang sebenar pensel
itu ialah 15 cm, cari skala yang digunakan untuk
lukisan tersebut.

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit