Answer:
Step-by-step explanation:
we know that
The area of a circle is equal to
we have
substitute
Remember that a central angle of subtends for the area of a complete circle
so
by proportion
Find the area of the circle for a central angle of
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Answer:
The total surface area of a regular hexagonal pyramid is 146.2 cm².
Step-by-step explanation:
The base is a regular hexagon 4cm on a side. its height is 8 cm.
The total surface area of a pyramid with regular hexagon base
Where, a represents the base edge and h represents the height of the pyramid.
The area of given regular hexagonal pyramid is
The total surface area of a regular hexagonal pyramid is 146.2 cm².