Answer:
The area of the regular pentagon is
Step-by-step explanation:
we know that
The area of a regular polygon is equal to
where
P is the perimeter of the regular polygon
a is the apothem
Find the perimeter P
----> the regular pentagon has five equal sides
---> distance from center to middle of side
substitute
16 Pints
if that's what your asking
Proving a statement by contrapositive means that if you want to prove that , you can instead prove that since the two are equivalent.
So, proving that by contrapositive means to prove that
since of course the negation of being odd is being even.
This claim is quite easy to prove: if n is even, then it is twice some other integer k:
This means that its square is
And so, if n is even, its square is also even. This proves, by contrapositive, that if n squared is odd, then n is odd.
-3a3b - 40a2b2 + 8a2 - 30ab3 - 28ab - 36b2
4
i looked it up
660/168 =
(22 × 3 × 5 × 11)/(23 × 3 × 7) =
((22 × 3 × 5 × 11) ÷ (22 × 3)) / ((23 × 3 × 7) ÷ (22 × 3)) =
(5 × 11)/(2 × 7) =
55/14