Mathematics: Find the length of the red arc. Leave your answer in terms of pi.

Find the length of the red arc. Leave your answer

Ответ:

ashley1460

22.01.2022

Mathematics

Known :

r = 18 m

θ = 90° (because right angle)

Asked :

arc length = ...?

Answer :

Arc length

$= \frac{θ}{360} \times 2\pi r \\ = \frac{90}{360} \times 2 \times \pi \times 18 \\ = \frac{1}{4} \times 36\pi \\ = 9\pi\: cm$

So, length of the red arc is 9π cm

Hope it helps and is useful :)

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Ответ:

asiababbie33

25.08.2021

Mathematics

Let n be the amount of time Maxine and Sammie are mowing. Then:
2(1-n/24)=1-n/26
2-2n/24=1-n/26
1248-52n=624-24n
28n=624
n=22.285714 mins pass before Sammie has twice as much to mow as Maxine
☺☺☺☺

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Find the length of the red arc. Leave your answer in terms of pi.

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