MEDALS WILL BE GIVEN!!! Use the net to find the lateral area of the cylinder.
R=5in H=9in

Question

MEDALS WILL BE GIVEN!!! Use the net to find the lateral area of the cylinder.
R=5in H=9in

tkhunny · Answer

The lateral surface area is everything but the lids.  $LSA = 2\pi RH$.  You are given R and H.  You're nearly done.

kingswank · Answer

@tkhunny I just need some help because I don't know any of this

tkhunny · Answer

Yes, you do.  I do not believe you do not know the substitution principle.

You have $2\pi RH$.

You are given R = 5 in.  Substitute $2\pi (5 in)H$.
You are given H = 9 in.  Substitute $2\pi (5 in)(9 in)$.

You need to be able to do that or you WILL fail.

elsa213 · Answer

Great job @tkhunny

kingswank · Answer

@tkhunny so is the answer 90?

tkhunny · Answer

No.  It has some relationship to the number 90.  Where did the $\pi$ go?  Where did the units go?  Where did you get 90?

kingswank · Answer

So is it 45