The area of a square is 1,521 cm2. Find the length of a side of the square by prime factorisation method.

asked Mar 21, 2021 54.7k views

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The area of a square is 1,521 cm2. Find the length of a side of the square by

prime factorisation method.

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5 votes

9514 1404 393

Answer:

39 cm

Explanation:

1521 = 3·3·13·13 = (3·13)² = 39²

The length of the side of the square is 39 cm.

Frint answered Mar 24, 2021

by Frint

5.1k points

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