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Temka [501]
3 years ago
6

What is 28.5/42 simplified

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
7 0

Answer: 28/42 as a fraction simplified is 2/3

Hope this helped

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Step-by-step explanation:

<h3>Sphere:</h3>

1) a) r =  7 cm

 \sf \boxed{\text{Volume of sphere=$\dfrac{4}{3}\pi r^3$}}

                             \sf =\dfrac{4}{3}*3.14*7*7*7\\\\= 1436 \ cm^3

 \sf \boxed{\text{\bf Surface area of sphere = $4\pi r^2$}}

                                           = 4*3.14 * 7 * 7

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b) r= 8.4 cm

     Volume = \dfrac{4}{3}\pi r^3

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   Surface area = 4*3.14*8.4*8.4

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<h3>Hemisphere:</h3>

      a) r = 6 cm

     \sf \boxed{\text{\bf Volume of hemisphere =$\dfrac{2}{3} \pi r^3$}}

                                                \sf =\dfrac{2}{3}*3.14*6*6*6\\\\= 452.16 \ cm^3

        \sf \boxed{\text{\bf Surface area of hemisphere=3 \pi r^2}}\sf \boxed{\text{\bf Surface area of hemisphere = $3 \pi r^2$}}

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                                                             = 339.12 cm²

                                                           

                       

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