Question

The area of a circular lawn is 154 cm square find its circumference

Answer 1

Given that : The area of a circular lawn is 154 cm²

As we know that : Area of Circle = πr²

According to the question :

$\pi {r}^{2} = 154 \\ \\ = > \frac{22}{7} {r}^{2} = 154 \\ \\ = > {r}^{2} = \frac{154 \times 7}{22} \\ \\ = > r = 7$

Now, circumference of circle = 2πr

$= > 2 \times \frac{22}{7} \times 7 \\ \\ = > 44$

So, the circumference of circle will be 44 cm.

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Answer 2

Answer:

circumference =44 cm

Step-by-step explanation:

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