Question

when the side of a square increases by 5 centimetre the area of the square increased by 135 cm² find the length of the side of the square

Answer 1

let side of square be a

when the side of a square increases by 5 centimetre the area of the square increased by 135 cm²
so, 135 = (a+5)² - a²
135 = a² + 10a + 25 - a²
10a = 135 - 25
10a = 110
a = 11cm

so, length of the side of the square is 11 cm

Answer 2

135=(a+5)2-a2
135=a2+10a+25-a2
qpa=135.25
10a=110
9=11 plz mark as a brainlist plzplzplz