Find the surface area of the cylinder.

A≈552.92

Step-by-step explanation:

A=2πrh+2πr^2 - that is the equation we have to use - for surface area, not area.

Since we are given the radius (r) and height (h) we can just plug things in...

A = 2(3.14)(8cm)(3cm)+(2)(3.14)(8cm)(2)^2 = A≈552.92

18

step-by-step explanation:

ik this stuph and i am smart donkey

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.