What value of expression when y=4

3y^2+y+8

Not to sure, but I have two answers

Step-by-step explanation:

3y (squared 2) + 1 + 8 or

3y (squared 2) + 5 + 8

(sorry if you get it wrong, not so good at mathś)

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!

answer: it is 1: 47 pm