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Find the area of the polygons

Find the area of the polygons-example-1
User Evan Moran
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2 Answers

12 votes
The formula to calculate the area of a regular polygon is, Area = (number of sides × length of one side × apothem)/2, where the value of apothem can be calculated using the formula, Apothem = [(length of one side)/{2 ×(tan(180/number of sides))}].
User Big Rich
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6 votes

Answer:

a)7.5cm b)20cm

Explanation:

a) ½base times height

b) base times height

User Ammar
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4.9k points