Question

when each side of a square was enlarged by 3m, its area became 100me^2. what was the side of frit square​

Answer 1

Step-by-step explanation:

Let,

side of first square = a

Area of first square = a^2

Now,

The side is enlarged by 3m

Therefore, Side of second square = a+3

Area of second square = (a+3)^3

100 = (a+3)^2

10 = a+3

a = 7m

Therefore, Side of first square is 7m

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Answer 2

Answer:

original length=l

after enlarging by 3 m

length(l2)=l+3

area after enlarging=100m^2

or,(l2)^2=100

or,l+3=✓100

or,l=10-3

l=7m