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Vadim26 [7]
3 years ago
10

HELP PLEASE I'M CRYING, EASY 2 QUESTIONS

Mathematics
1 answer:
horsena [70]3 years ago
5 0

Answer:

12) 154   squared meters

13) 307  cm^2

Step-by-step explanation:

12) A circle has area pi*r^2

r is half the diameter so half of 14 is 7

pi in this case is 22/7

A=22/7 * (7)^2

A=22/7  * 49

A=22     *49/7

A=22     *7

A=154 squared meters

13)  Area of rectangle is 10(18)=180

      Area of half a circle is .5*pi*r^2=.5*pi*9^2  

       Adding the two areas together would result in a total area of 307.2 squared centimeters

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3 years ago
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vova2212 [387]
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14r+20<14r+16

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Ur answer is:

r < - 7  OR   0 < - 4

7 0
3 years ago
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