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rjkz [21]
3 years ago
8

A party hat has a diameter of 18 centimeter and a height of 25 centimeter. Find the volume of air it can occupy.

Mathematics
1 answer:
dusya [7]3 years ago
6 0

Answer:

2120.58 centimeters³

Explanation:

First divide the diameter by 2 to get 9. The volume of a cone is 1/3*π*r²*h so  1/3*π*9²*25

This equals 2120.59 cm³ (cubed)

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What is the greatest common factor of 90, 126, 180 and 990?
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<em>Comment on the GCF</em>

It can be useful to know Euclid's algorithm for finding the GCF:

  1. Determine the remainder from dividing the larger number by the smaller.
  2. If the remainder is zero, the smaller number is the GCF. If the remainder is non-zero, use it to replace the larger number and repeat from step 1.

For example, 126 mod 90 = 36; 90 mod 36 = 18; 36 mod 18 = 0, so 18 is the GCF of 126 and 90. (The modulo function 'mod' returns the remainder from division.)

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