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September 17, 2014

September 17, 2014

Posted by **Sella** on Wednesday, July 11, 2012 at 9:52am.

What expression represents the area of the table? Suppose the table is 90 cm high what would be the area?

- algebra -
**Jai**, Wednesday, July 11, 2012 at 10:15amLet x = height of table

Let x+30 = length of table

Recall that area of square is given by

A = L^2

where L = length of one side.

substituting,

A = (x+30)^2

A = x^2 + 60x + 900

If table is 90 cm high, then the length of square is 120 cm. Substituting this to the equation for area,

A = 120^2 + 60(120) + 900

A = 22500 cm^2

hope this helps~ :)

..btw, pinoy ka din ba? (na-curious ako dahil sa mang Pedring na pangalang pinoy). But you don't have to answer if you don't want to. :)

- algebra -
**Sella**, Wednesday, July 11, 2012 at 10:34amyes, pinoy ako. btw, salamat :)

- algebra_correction -
**Jai**, Wednesday, July 11, 2012 at 11:03am*wait. I had a correction:

If table is 90 cm high, then the length of square is 120 cm. Substituting this to the equation for area,

A = 90^2 + 60(90) + 900

A = 14400 cm^2

*sorry about that! The x value substituted must be 90, not 120. x__x

..haha wow ang galing naman,, fellow Filipino :D :D :D

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