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lorasvet [3.4K]
3 years ago
10

Can someone please answer. There is one question. There a picture. Thank you!

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
6 0
Ok so you need the surface area formula of a cone.

A = πrl +  πr∧2

where π = 3.14 (pi) 
           r = half of the diameter (18/2 = 9)
           l = slant hight ( 22 )
Slot this into the equation  A =  (3.14 [ rounded] )(9)(22) + (3.14 [ rounded] )(9)∧2 = 876.06 this is due to the rounded pi the answer is 876.5 i.e the third.

Hope this helps :D.
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3 years ago
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Svetlanka [38]

9514 1404 393

Answer:

  24

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Donald is 24 years old now.

_____

<em>Alternate solution</em>

You can also work this by considering that 5 years ago, Natalie's age was more than Donald's age by twice Donald's age then. Hence Donald was 38/2 = 19 at that time. Now, Donald is 19+5 = 24.

4 0
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olga55 [171]

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5 0
3 years ago
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