i am i right in thinking that this Attachment 14854would = Attachment 14855

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- January 16th 2010, 10:08 AMandyboy179area of a square
i am i right in thinking that this Attachment 14854would = Attachment 14855

- January 16th 2010, 10:14 AMe^(i*pi)
- January 16th 2010, 10:19 AMandyboy179
- January 16th 2010, 10:45 AMandyboy179
..., could you explain it in more detail please?!?!?

- January 16th 2010, 11:16 AMandyboy179
sorry, i'm confusing myself i think. so is the answer?

- January 16th 2010, 12:24 PMe^(i*pi)
Yeah that's right.

To solve it I used the fact that the area of a rectangle is and I also used the distributive property which says

As the sides are and to find the area I multiplied them.

Surds act like any other number when multiplied and using the distributive property above for this case: and and

Therefore the area is

As a law of surds, for positive*p,q*:

You could leave the answer as but it is more usual to simplify.

To simplify a surd get the prime factors of the number inside it- in this case 50.

Using the rule directly above

because we can simplify the above to give which is fully simplified.

I then combined this with the first part (ab) and got the final answer of