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The surface area of a cube is 600 cm². If each edge is doubled, what is the new surface area, in cm²?

Sagot :

Riza1idn
[tex] area \ cube \ is \ 600 \ cm^2 \\ \\ A=6a^2 \\ \\600=6a^2\ \ /:6\\\\a^2=100\\ \\a=\sqrt{100}= =10 \ cm\\ \\ a=2 \cdot 10 =20 }cm \\\\A=(20 )^2=400 \ cm^2 \\\\Answer: \ \ The \ new \ surface \ area \ is \ 400 \ cm^2 . [/tex]