## anonymous one year ago can some one help me with surface area for cylinders help

1. anonymous

$A=2\pi rh+2\pi r ^{2}$

2. anonymous

where r is the radius h is the height

3. anonymous

here is what it is Find the best approximation of the surface area of this cylinder. (Points : 3) 1380 cm2 4280 cm2 2140 cm2 1070 cm2

4. anonymous

what one do you think it is

5. anonymous

where's the cylinder lol

6. anonymous

here it is |dw:1433193634610:dw|

7. anonymous

ok, what's the radius of this cylinder

8. anonymous

22cm or 9cm