The formula for the surface area of a cylinder is SA = 2πr(h + r). What is the value of SA when r = 3 centimeters and h = 4 centimeters?

Question

anonymous · Answer

Substitute r = 3 & h = 4
SA = 2π(3)(4+3) =?

anonymous · Answer

Do 2 x 3.14 (which is approximate for pi) and then multiply that by 3.

anonymous · Answer

i know but then when i got that i got this decimal and im not suppose to have a decimal thats not one of my question.

anonymous · Answer

Does it say to round?

anonymous · Answer

nope.

anonymous · Answer

Maybe there should be a decimal and it doesn't mention it? What did you even get as the answer?

anonymous · Answer

nevermind i found out my answer it was 42.

anonymous · Answer

For a group of objects made of the same material, the weight of an object varies directly with its volume. If an object that has a volume of 20 cubic inches weighs 28 ounces, what is the constant of variation?

anonymous · Answer

Ok then

anonymous · Answer

For a group of objects made of the same material, the weight of an object varies directly with its volume. If an object that has a volume of 20 cubic inches weighs 28 ounces, what is the constant of variation?