Question

A man plants 5625 trees in his orchard in such a way that there are as many rows as there are trees in each row. How many rows are there?

• A. 75
• B. 25
• C. 50
• D. 100

Answer 1

The correct option is A

75

Let the number of rows be x.

$\therefore$ number of trees in each row=x

and, total number of trees planted =$x\times x=x^2$

$x^2=5625$

$x=\sqrt{5625}=\sqrt{5\times 5\times 5\times 5\times 3\times 3}$

$=5\times 5\times 3=75$

therefore, the number of rows =75