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22 April, 08:35

Hiyaa there; )

A circular hot spring has a diameter of 110 meters. Over time, the diameter

of the spring decreases by 3 meters. By how many square meters does the

area of the hot spring decrease?

(answer quick)

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Answers (1)
  1. 22 April, 08:50
    0
    Originally, the diameter was 110 m, so the radius was 55 m. To get the area, you square the radius and multiply by π. That's 55^2 * π, making the original area 3025π m^2.

    After, the diameter decreased to 107 m, making the radius 53.5 m. Again, you square the radius and multiply by π, making the new area 2862.25π m^2.

    Subtract the 2862.25π from 3025π, giving you a total reduction of 162.75π square meters.

    Rounded to the nearest hundredth, that's 511.29 square meters.
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