Question

The picture shows 3 steel rods. The rods are congruent, solid cylinders. The area of the top of the one rod is 7.07 square centimeters. The area of the body of one rod is 39.58 square centimeters. Find the total surface area of the 3 rods.
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Answer 1

A)53.72
B)46.65
C)139.95
D)161.65

Answer 2

I know it is either C or D

Answer 3

@jim_thompson5910

Answer 4

@Preetha

Answer 5

@thomaster

Answer 6

@e.mccormick

Answer 7

Any ideas?

Answer 8

Are you able to upload the picture?

Answer 9

Yes..wait for a while

Answer 10

alright

Answer 11

Here it is

Answer 12

Just 3 steel rods.

Answer 13

So it looks like the bottoms aren't included

Answer 14

If that's the case, then the surface area of one rod is 7.07+39.58 = 46.65

Answer 15

There are 3 of these congruent cylinders. So 3*46.65 = 139.95 is the total area

Answer 16

Actually D is the correct answer, but thanks.

Answer 17

hmm I guess the bottoms were included

Answer 18

Yes

Answer 19

The problem with that logic is that 2*7.07+39.58 = 53.72 is the SA for one rod

so 3*53.72 = 161.16 is the total SA for all 3 combined

But that's not equal to D

Answer 20

Can you help me with this problem?

Answer 21

The area of a cylinder's base is 706.5 square millimeters. The cylinder's lateral area is 471 square millimeters. What is the total surface area of the cylinder, in square centimeters?

Answer 22

Total Surface Area = 2*(Area of Base) + (Lateral Surface Area)

Answer 23

A)18.84
B)188.4
C)1884
D)18840

Answer 24

Total Surface Area = 2*(Area of Base) + (Lateral Surface Area)


Total Surface Area = 2*(706.5) + (471)


Total Surface Area = 1884

Answer 25

Thanks