Answers

2015-12-05T18:30:20+08:00
1,830
this is my answer
0
The dimensions should not be higher than the area :-)
is it higher?
23 x 15 =345
DenMath, you are right:-) It's Beth5's answer (1,830) that does not make sense :-) 1,830 is way high for dimension with only 345 square meters as area :-)
2015-12-05T19:00:33+08:00
X= the side of the square
x+8= the side of the enlarged side of the square

the area of x and x+8 is equal to 345m2 where

(x)(x+8)=345
x2+8x=345
then we will factor it using completing the square
x2+8x+16=345+16
x2+8x+16=361
then we will square root each side of the equation.
x+4=19
x=19-4
x=15meters
then the other side is x+8
15+8=23
the new dimension is 23m by 15m. Welcome ;)
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