Can y’all please help me answer these questions

Step-by-step explanation:

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5.

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As we know the radius and slant height, we can use Pythagoras' Theorem to find the perpendicular height.

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Now substitute this into the volume formula.

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6.

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7.

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1/8 3/16 3/4

step-by-step explanation:

you put them as all the same denominator and multiply

if you was gonna solve for a, a is a   < -12