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Harlamova29_29 [7]
3 years ago
11

The radius of a birthday cake is 5 inches. Icing will decorate the top edge of the cake.

Mathematics
1 answer:
maria [59]3 years ago
4 0

Answer:

Step-by-step explanation:

circumference= pi * diameter

diameter= 2 * radius

circumference= pi *2(5)

c= 10pi

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15/40 in lowest term I need it so bad now
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In order to reduce ANY fraction to lowest terms, find any common factors
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Do  15  and  40  have any common factors ?
Let's see . . .

The factors of  15  are  1,  3,  <em>5</em>, and  15 .
The factors of  40  are  1,  2,  4,<em>  5</em>,  8,  10,  20, and  40 .

Ah hah !  Do you see that ' <em>5</em> ' on both lists ?  That's a common factor.

So  15/40  is NOT in lowest terms.

Divide the numerator and denominator both by  5 :

       15 / 40  =<em>  3 / 8</em>

3  and  8  don't have any common factor except ' 1 '. 
So  3/8  is the same number as  15/40, but in lowest terms.


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