Show that the function f is not differentiable at (0, 0)
f(x, y) = \sqrt[3]{x^3+y^3}

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!

∠cbe and ∠deb are same-side interior angles.

i took the test