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snow_lady [41]
3 years ago
13

Name two ways a river ecosystem varies from the river source toward its mouth environmental science 6.3

Geography
1 answer:
alexandr1967 [171]3 years ago
3 0
<span>The Answer is Slower & Warmer.</span>
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<em>Additional comment</em>

The working out was not requested, but here it is, anyway.

  a = √(40.8² -(48/2)²) = √1088.64 ≈ 32.99 . . . feet

  P = 5(48 ft) = 240 ft

  A = (1/2)Pa = (1/2)(240 ft)(32.99 ft) = 3959.3 ft²

Note that the radius has been rounded down to the nearest tenth. If the full-accuracy value were used, the area would be found to be 3963.98 ft².

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