Simple question that i can't figure out how to answer somehow. factor completely, 3ab - 39ab

one may note that both are like-terms, thus you can simply subtract one from the other, but is only needed to be factored.

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

kk.bj.

step-by-step explanation:

.mnm.kn.kj