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BECE Mathematics 2022 Paper

Question : 31

Total: 40

225 \text{cm}^2

Solution:

Concept:

The side length of a square is the square root of its area, since

\text{Area} = \text{side}^2

Explanation:

For a square with side length

L

, the area is given by

L \times L = L^2

Here, the area is

225 \, \text{cm}^2

So,

L^2 = 225

We need the positive number whose square is

225

Since

15 \times 15 = 225

, we get

L = 15

Thus, the length of the side is

15.00 \, \text{cm}

Answer:

15.00 \, \text{cm}

(Option A).

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