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qaws [65]
2 years ago
11

PLEASE HELP ASAPPPPP

Mathematics
1 answer:
sveticcg [70]2 years ago
4 0

Answer:

506.7 cm²

Step-by-step explanation:

The amount of cardboard needed would be the surface area of the cone,

S= pi(r)(l+r) where r is the radius and l is the slant height.

You can find l using the Pythagorean theorem. l²=r²+h² which is l²=6²+20² and you get l = √436.

Plug r and l into the equation: S = 6pi(√436 + 6) = 506.7 cm²

Let me know if you have any questions about my steps!

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Hope this helps! ;-)

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Answer:

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Step-by-step explanation:

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6 0
3 years ago
Please help me ASAP
lutik1710 [3]

9514 1404 393

Answer:

  30°

Step-by-step explanation:

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  2x +4x = 180°

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_____

<em>Comment on units</em>

A lot of times the angles are assumed to be measured in degrees. Using that assumption, x=30 (degrees). When no units are specified, the angle measure defaults to radians. In radians, x = π/6. (We rarely see problems of this nature where the angles are expected to be measured in radians. More often, we see poorly edited questions where angles need to be assumed to be measured in degrees.)

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