Amanda composed two songs. the longer song is 126 seconds less than twice the length of the short song. the longer song lasts 286 seconds. how long is the shorter song?

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)

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