Question

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

Answer 1

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

Answer 2

ok

Answer 3

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

Answer 4

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.

Answer 5

*anger*

Answer 6

why?

Answer 7

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.

Answer 8

its alright

Answer 9

lool, not for medals :P. Ah well.