Question

three- fifths of the square of a certain no is 126.15 .find the no.

Answer 1

Let the number be x

According to the question, $\frac{3}{5}$$x^{2}$ = 126.15

⇒ $x^{2}$ = 126.15 * $\frac{5}{3}$

⇒ $x^{2}$ = 42.05

⇒ x =$\sqrt{42.05}$

⇒ x= 14.5

Hence the number is 14.5

Answer 2

Step-by-step explanation:

square of the number = to 3/5 x^2 = 126.15

x^2 = 126.15 * 5/3

x^2= 42.05

x = √42.05

x= 14.5