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evablogger [386]
3 years ago
11

What is the area of a regular pentagon with side length 20 feet? Can u guys show steps pls.

Mathematics
1 answer:
ivann1987 [24]3 years ago
4 0

Answer:

688.19m^2

Step-by-step explanation:

A=\frac{1}{4} \sqrt{5(5+2\sqrt{5} } a^2\\=\frac{1}{4} \sqrt{5(5+2\sqrt{5} }* 20^2\\=688.19096m^2\\=688.191m^2\\=688.19m^2

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