Please help. Solve
If the sides of a square are increased by 3 cm, its area becomes 100cm. Find the original square.

Question

Please help.  Solve
If the sides of a square are increased by 3 cm, its area becomes 100cm. Find the original square.

inkyvoyd · Answer

Let's say the original square had a side length of x.

anonymous · Answer

ok

inkyvoyd · Answer

Then, how long would the side length be when increased by three?

anonymous · Answer

Square starts with side length s.
Area of a square is s^2.
We know that when s is increased by 3, so s + 3, the area will be 100. So...
(s + 3)^2 = 100
Squareroot both sides.
s + 3 = 10
Subtract 3.
s = 7

Original length was 7.

inkyvoyd · Answer

*anger*

anonymous · Answer

why?

inkyvoyd · Answer

Happens to me all the time. I'm in the middle of helping someone out step by step, then some dude posts all the steps.

anonymous · Answer

its alright

inkyvoyd · Answer

lool, not for medals :P. Ah well.