Find the surface area of the right circular cylinder.

be sure to label your answer. round to the nearest hundredth.

One EASY!! Good!

Lateral area: base*2 + side = pi*25*2 + 2*pi*5*10 = 50*pi + 100*pi = 150*pi

Lateral area: 471.23889803846895

Rounded to hundredths: 471.24

A= 2pi(r)(h)+ 2pi (r^2)
Using this formula
Your answer is 471.24

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm