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Anonymous
Anonymous asked in 科學及數學數學 · 7 years ago

F.1 volume questions!!!

1. Given that the total surface area of a cube is 150cm^2,find its volume

2. After 200cm^3 of water is poured into an empty triangular prism,the water level in the prism is 80mm.Find the base area of the triangular prism

1 Answer

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  • 麻辣
    Lv 7
    7 years ago
    Favorite Answer

    1.Given that the total surface area of a cube is S=150cm^2,find its volume V=?S=6*a^2=150a^2=150/6=25 => a=5V=a^3=125cm^3......ans

    2.After V=200cm^3 of water is poured into an empty triangular prism,the water level in the prism is h=80mm.Find the base area of the triangular prismV=A*h/3A=3V/h=3*200/80=30/4=7.5cm^2......ans

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