100 points!! Brainliest if correct!!
2 answers:
Answer:
Step-by-step explanation:
surface area=top circle+bottom circle+straight face
top circle=bottom circle=pi(w-1)^2
straight face=length*height=circle circumference*height
=2pi(w-1)(w+3)
surface area=2pi(w-1)^2+2pi(w-1)(w+3)
=2pi(w-1)(w-1+w+3)
=2pi(w-1)(2w+2)
=4pi(w-1)(w+1)
Answer:
4π(w+1)(w-1)
Step-by-step explanation:
The total surface area of the cylinder
= 2 x area of base circle + area of vertical surface
= 2x pi x radius^2 + 2x pi x radius x height
= 2π(w-1)^2 + 2π(w-1)(w+3)
= 2π[w^2-2w+1 + w^2+2w-3]
= 2π(2w^2-2)
= 4π(w^2 - 1)
= 4π(w+1)(w-1)
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