Find the area of a regular polygon A B C D E F G H each side equal to 5 cm. Hc = 11cm and AL⊥ HC such that AL = 4cm
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Answer:
sum of all side= answer
use this formula and you get your answer
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Answer:
hope this will help you
Step-by-step explanation:
AL = 4 cm
All sides =5 cm
HC = 11 cm
Area of trapezium ABCH =Area of trapezium GDEF
Area of a trapezium= 1/2 (a+b )h
= 1/2 (5+11)4 = 32 cm²
So Area of trapezium GDEF=32 cm²
Area of rectangle MCDG=l×b=11×5=58 cm ²
Area of Octagon = Area of two trapezium + Area of rectangle
= 22×32+55
=64+55=119 cm²
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