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Sra
Sra asked in Science & MathematicsMathematics · 8 months ago

MATH HELP?

all edges of a cube are expanding at the rate of 3 centimetres per second. How fast is the surface area changing when the edge is 1 centimeter?

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  • alex
    Lv 7
    8 months ago

    S = 6x^2 , given dx/dt = 3 cm/s at x=1 cm

    dS/dt = 12x(dx/dt) = 36 cm^2/s

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