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mixas84 [53]
3 years ago
5

A circle has a diameter of 14.5cm

Mathematics
1 answer:
Alenkasestr [34]3 years ago
7 0
The radius will be 7.25cm
The circumference will be about 45.55
The area will be about 165.13
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Step-by-step explanation:Step-1 : Multiply the coefficient of the first term by the constant 1 • 18 = 18

Step-2 : Find two factors of 18 whose sum equals the coefficient of the middle term, which is -9 .

-18 + -1 = -19

-9 + -2 = -11

-6 + -3 = -9 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -6 and -3

x2 - 6x - 3x - 18

Step-4 : Add up the first 2 terms, pulling out like factors :

x • (x-6)

Add up the last 2 terms, pulling out common factors :

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Step-5 : Add up the four terms of step 4 :

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snow_tiger [21]

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