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please help me figure out how to solve the problem below:

the problem below is asking how to find the surface area of the cylinder. please leave an explanation on how to solve it.

formula: 2(3.14)(r)^2 + 2(3.14)(r)
r: radius ​

please help me figure out how to solve the problem belowthe problem below is asking how to find the surface area of the cylinder please leave an explanation on class=

Respuesta :

Answer:

3315.84mm^2.

Step-by-step explanation:

We calculate the diameter of the base of the cylinder using Pythagoras:

40^2 = d^2 + 32^2

d^2 = 40^2 - 32^2 = 576

d = sqrt 576 = 24 mm.

So the radius = 1/2 diameter = 12 mm.

The surface area

= 2(3.14)(12)^2 + 2(3.14)(12)(32)

= 904.32 + 2411.52

= 3315.84.

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