If angle a is congruent to angle b and the supplement of b is 22 degrees the angle a =
2 answers:
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Answer:
A = 240 units²
Step-by-step explanation:
the area (A) of a regular polygon is
A = pa ( p is the perimeter and a the apothem )
here p = 8 × 6 = 48 ( an octagon has 8 sides ) and a = 10 , then
A = × 48 × 10 = 24 × 10 = 240 units²