The upper crust is the region that starts at Earth's surface and ends between km and km below Earth's surface.

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a

a ≈ 172.05

step-by-step explanation:

the pictures.

i think its 7.6

if so your welcome