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06-03-2021
Mathematics

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Find the area of a regular pentagon with a side of 5cm round to nearest tenth

Find the area of a regular pentagon with a side of 5cm round to nearest tenth class=

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thebecks thebecks

06-03-2021

Answer:

43 cm^2

Step-by-step explanation:

tan 72/2 = 0.7265

0.7265 = 0.5(5)/h

h = 3.44

3.44 x 5 x 0.5 = 8.6

8.6 x 5 = 43 cm^2

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