Which expression correctly gives the perimeter of the triangle below?

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

expression #3 is not equivalent. the others are.

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a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

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