solve this. pa regular hexagons is produced by...
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Answer:
It's (a) 42
Step-by-step explanation:
A regular hexagon has 6 angles and the sum of the six angles are 720°. That means each angle has 720°/6 = 120° and the exterior angle is 60° which means that each triangle is equilateral triangle. Hence the perimeter of the star is (sum of the double sides of each triangle) × 6 = 2 × one side of the hexagon. [as the triangles are equilateral and each sides are the common sides of hexagon]
= 2 × 21
= 42
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