Answer: 10
Step-by-step explanation:
Answer:
The value is the interquartile range which is 138.
Step-by-step explanation
Internet
We can't tell what size the page is now, because you never told us
what size it was before all the shenanigans started. All you gave us
was a couple of ratios.
And you didn't even tell us WHAT was increased and decreased ...
was it the length of the sides, or was it the area of the page ?
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If it was the length of the sides ...
Let's say the page was 8" high and 4" wide.
Increase lengths by 50% : Now it's 12" high and 6" wide.
Decrease lengths by 50% : Now it's 6" high and 3" wide.
The sides are now 3/4 as long as they started out,
and the area is 9/16 of what it started out.
The first shape is a right triangle composed with a semi circle.
The right triangle has a height of 50cm, and its base is the diameter of the circle, which is twice the radius, which is 30cm.
So, the area of the triangle is
The area of the circle is simply
So, the area of the shape is
The second shape is the difference between an outer circle and an inner one. The area is thus the difference of the two areas: let 
be the outer radius and 
be the inner one. The area of the shape is
The correct answer is $35.16 dollars. To get the answer, multiply $8.79 dollars by 4. Simple
