Answer: 110 square cm
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Explanation:
All sides of a regular polygon are the same length. So the bottom side is also 8 cm.
Draw lines from the center to each vertex of the pentagon. Five triangles form. Each triangle has a base of 8 and a height of 5.5 (since all five triangles are congruent)
area of one triangle = 0.5*base*height = 0.5*8*5.5 = 22
area of five triangles = 5*(area of one triangle) = 5*22 = 110
If you mean
3 times square root of 125 then go to AAA
if you mean ∛125 then go to BBBB
AAAAAA
3 times √125=3 times 5√5=15√5
BBBBBBB
∛125=5 or -5
Answer:
20%
Step-by-step explanation:
With those changes, the fraction is multiplied by ...

That is, the value of the fraction is decreased by 20%.
Answer:

Step-by-step explanation:
Given the expression






Thus,

You only did the last one wrong, (3/4) times 2 is 3/2. 3/2 - 1/2 is 2/2 or 1.
So it'd be (2,1)