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What is the area of the heptagon with the radius of 3.0cm and a perimeter of 20.3cm ??!

HELP NEEDED What Is The Area Of The Heptagon With The Radius Of 30cm And A Perimeter Of 203cm class=

Sagot :

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Step-by-step explanation:

Side length of heptagon = 20.3cm / 7 = 2.9cm.

The heptagon is made out of 7 congruent triangles, each with height 3.0cm and base 2.9cm

Hence area of heptagon

= 7 * [(0.5)(3.0cm)(2.9cm)]

= 7 * 4.35cm²

= 30.45cm².

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