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NCERT Exemplar Solutions Class 8 Mathematics Solutions for Squares and Square Roots & Cubes and Cube Roots - Exercise in Chapter 3 - Squares and Square Roots & Cubes and Cube Roots

Question 126 Squares and Square Roots & Cubes and Cube Roots - Exercise

8649 students were sitting in a lecture room in such a manner that there were as many students in the row as there were rows in the lecture room. How many students were there in each row of the lecture room?

Answer:

From the question it is given that,

Total number of students were sitting in a lecture room = 8649

Let us assume the number of students in each row be ‘a’

Then,

Total number of students = a × a

8649 = a^2

By taking square root on both sides,

a = √(8649)

a = √(93 × 93)

a = √(93)^2

a = 93

∴ The number of students in each row is 93.

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