In 2009, Zane paid $9,540 in federal income tax. In 2010, he paid 10% less. How much did Zane pay in 2010?
2 answers:
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Here's the solution ~
As we know, we can calculate the circumference of a circle in terms of its diameter as :
where, c = circumference and d = diameter
And also, circumference of circle is terms of radius (r) is :
Now, let's move on to questions ~
<h3>First </h3>・ ．━━━━━━━†━━━━━━━━━．・
<h3>Second</h3><h3 /><h3 /><h3 /><h3>・ ．━━━━━━━†━━━━━━━━━．・
<h3>Third</h3>・ ．━━━━━━━†━━━━━━━━━．・
<h3>Fourth</h3>・ ．━━━━━━━†━━━━━━━━━．・
<h3>Fifth </h3>・ ．━━━━━━━†━━━━━━━━━．・
<h3>Sixth</h3>➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖
Given:
The area model for .
To find:
The value of and the missing values in the area model.
Solution:
2.1 can be written as 2 and 0.1 on the left side of the area model.
3.2 can be written as 3 and 0.2 on the top of area model.
Area of the four parts of the area model are:
The complete area model is shown below.
After adding all areas of the area model, we get
Therefore, the value of is 6.72 and the missing values of the area model are 0.3 and 0.02 respectively.
