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harina [27]
3 years ago
15

HELP MEEEE PLZ. i need to Find the surface area and volume

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
6 0

Answer:

A ≈ 494.80 mm^{2}

V = 827.02 mm^{3}

Step-by-step explanation:

height ( <em>h </em>) = 13 mm

radius ( <em>r </em>)  = \frac{9mm}{2} = 4.5 mm

Surface area  = 2\pi rh + 2\pi r

                      = 2π(4.5)(13) + 2π(4.5)

                      ≈ 494.80 mm^{2}

Volume = \pi r^{2} h

<em>              </em>= \pi (4.5)^{2} (13)

             = 827.02 mm^{3}

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