asked 230k views
3 votes
Ken's landscape gardening business makes odd shapes lawns the include semicircles. Find the length of the edging material needed to border the lawn design. Use 3.14 for pi. The radius of the flowerbed is 2.5 m.

2 Answers

2 votes

Answer:

hehe

Explanation:

answered
User David Geismar
by
7.6k points
5 votes

Answer:


L_s=7.85\ m

Explanation:

Length Of Semicircles

The length of a circle or radius r is


L=2\pi r

A semicircle has half this length:


L_s=\pi r

The radius of the flowerbed is 2.5 m, thus the length of the edging material needed to border the lawn design is


L_s=\pi (2.5)=(3.14)(2.5)=7.85\ m


\boxed{L_s=7.85\ m}

answered
User Lacrymology
by
7.5k points
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