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o-na [289]
3 years ago
9

Please answer this question now

Mathematics
2 answers:
SOVA2 [1]3 years ago
8 0

Answer:

<u>292.77</u>

Step-by-step explanation:

πr(r+\sqrt{h2+r2})

13 x 2 = 26

7 x 2 = 14

26 + 14 = 40

\sqrt{40} = 6.32

7 + 6.32 = 13.32

3.14 x 7 = 21.98

21.98 x 13.32 =

<u>292.77</u>

Ivan3 years ago
5 0

Answer:

Approximately 439.6 square millimeters.

Step-by-step explanation:

The formula for the surface area of a cone is the following:

A=\pi r^2+\pi r l

Where, <em>r </em>is the radius and <em>l</em> is the slant height.

The radius is 7 and the slant height is 13. We also use 3.14 for π Thus:

A=(3.14)(7)^2+(3.14)(7)(13)\\\text{Use a Calculator}\\A\approx 439.6

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<h3>Calculation of a triangle's perimeter:</h3>

The triangle's perimeter is equivalent to the sum of its edges, where a, b, and c are its sides.

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With the information provided, the formula will become 'a = 3+2s'

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Learn more about triangle perimeter:

brainly.com/question/23935199?referrer=searchResults

#SPJ10

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