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3 years ago

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The radius of the circular base of a cone is (3x-2)m. if its slant height is (9x^2 - 6x)m, express the cone’s surface area as fa

ctored polynomial in x.
NOTE: SA= πrs+πr^2

1 answer:

Doss [256]3 years ago

5 0

Answer:

SA= 289.56 m^2

Step-by-step explanation:

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Answer:

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Step by step explanation:

$y = x^2 +4~~~~~~~~~...(i)\\\\y = 2x +4~~~~~~~~~...(ii)\\\\\text{From (i) and (ii):}\\\\~~~~~~x^2 +4 = 2x+4\\\\\implies x^2 = 2x\\\\\implies x^2 -2x = 0\\\\\implies x(x-2) = 0\\\\\implies x =0,~ x = 2$

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