anonymous one year ago Find the area of the rectangle

1. anonymous
2. SolomonZelman

If I say the following ($$\Downarrow$$) then you will agree, right? $$\huge\color{magenta}{ \rm L }$$ $$\normalsize\color{ slate }{\Huge{\bbox[5pt, lightcyan ,border:2px solid black ]{ \color{lightcyan}{\Huge\frac{~~~~~~~~\frac{~}{~~~\frac{~\frac{}{}~}{~\frac{~}{~}}~~~~}~~~}{~\frac{\frac{~}{~\frac{~\frac{}{~}}{~}}~~}{~}~~} } }}}$$ $$\huge\color{darkviolet}{ \rm W }$$ $$\huge\color{blue}{ \rm Area = \color{magenta}{ \rm L }\times\color{darkviolet}{ \rm W } }$$

3. SolomonZelman

so, same thing is here, except that your L is 4√10, and your W is 3-√10

4. anonymous

Mhm okay

5. SolomonZelman

So in this case $$\huge\color{blue}{ \rm Area = \color{magenta}{ \rm 4\sqrt{10} }\times\color{darkviolet}{ \rm \left(3-\sqrt{10}\right) } }$$

6. SolomonZelman

all you got to do, is to multiply this.

7. anonymous

Would it be 12/10-40?

8. SolomonZelman

no, .... how did you come up with this expression?

9. anonymous

4 times 3 then 4 times 10

10. anonymous

Then it would have to be 12/10-10 or whatever

11. SolomonZelman

4√10 • (3 - √10) = (4√10 • 3) - (4√10 • √10)= (12√10) - (4√100)= 12√10 - (4•10)= 12√10 - 40

12. SolomonZelman

I mean your question doesn't make sense because the width is negative, but...