3 years ago

I need help with this question

Mathematics

1 answer:

kap26 [50]3 years ago

5 0

Answer:

the answer is attached to the picture

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What is the total surface area?

Anastasy [175]

Answer:

2198 cm²

Step-by-step explanation:

Total surface area of a cylinder = 2πrh + 2πr²

Radius, r = diameter/2

= 20cm/2

= 10 cm

Height, h = 25 cm

Total surface area of a cylinder = 2πrh + 2πr²

= 2*3.14*10*25 + 2*3.14*10²

= 1,570 + 6.28*100

= 1,570 + 628

= 2198 cm²

Total surface area of a cylinder = 2,198 cm²

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3 years ago

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_____ is another way of making numbers easier to work with when we don’t need to know exactly how many

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3 years ago

Please help. I’ll mark you as brainliest if correct!

djverab [1.8K]

Answer:

Step-by-step explanation:

children=c

adults=a

c+a=359

a=359-c

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-3.25 c=1621-2154

-3.25 c=-533

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