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40 points help please A right cylinder has a radius of 7 cm and a height of 3 cm.

SHOW YOUR WORK


(a) Find the Surface Area of the cylinder.


(b) Find the Volume of the cylinder.


(c) If you wanted more volume in your cylinder, which of these two ideas would give the most Volume?


1. Doubling the radius to 14 cm, while the height remains 3 cm.

or

2. Tripling the height to 9 cm, while the radius remains 7 cm.


Sagot :

Step-by-step explanation:

(a) use surface area formula of cylinder that is for Lateral surface area and for total surface area

LSA= 2πrh

TSA= 2πr(h+r)

(b) volume of cylinder= πr^2h

..........