makonfaknk makonfaknk
  • 02-05-2019
  • Mathematics
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What is the figure's surface area? (Use 3.14 for π .)



301.44 cm^2
320.28 cm^2
395.64 cm^2
452.12 cm^2

What is the figures surface area Use 314 for π 30144 cm2 32028 cm2 39564 cm2 45212 cm2 class=

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kudzordzifrancis
kudzordzifrancis kudzordzifrancis
  • 11-05-2019

ANSWER

[tex]320.28 {cm}^{2} [/tex]

EXPLANATION

The surface area of a cylinder is given by

[tex]SA = 2\pi \: r(r + h)[/tex]

From the diagram, r=3cm and h =14cm.

We substitute the known values into the formula to get:

[tex]SA = 2\pi \: 3(3+ 14)[/tex]

[tex]SA = 2(3.14)\: 3(3+ 14) [/tex]

[tex]SA =320.28 {cm}^{2} [/tex]

The second choice is correct.

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