SA = 4π^2h, Where SA is the surface area, R is the radius and H is the height.

1 answer:

8 0

You mean
$SA=4\pi r^2h$
when height is trippled
replace h with 3h

$SA=4\pi r^2 (3h)$
$SA=3(4\pi r^2h)$
the surface area is tripppled

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