Question

for the cylinder i got sa= 2712.9 and v= 10851.84 nd for sphere i got sa= 1808.64 and v= 7234.56 am i right?

Answer 1

Cylinder SA is correct.

Answer 2

Volume is off just a little bit from what I got. Probably used different values of Pi.

Answer 3

sa = 2 *pi*radius* height.... right?

Answer 4

No...
It's 2(Pi*r^2) + 2Pi*r*height

Answer 5

thats total surface area! .. oh well..

Answer 6

Is that not what they asked for? "Calculate the surface area"

Answer 7

But anyhow, your volume surface area and volume are also correct, wahe.

Answer 8

yea.. correct.. i always consider lateral surface area.. my bad :/