Question

A circular plot covers an area of 154 cm. How
much long wire is required for fencing the
plot ?​

Answer 1

Area of circle= 154 cm²

πr² = 154

22/7 × r² = 154

r² = 154 × 7/22

r² = 49

r = 7 CM

Circumference of circle = 2πr = 2×22/7×7 = 44cm.

44cm long wire is required for fencing the plot.

Hope it helps!!

Thank you

Answer 2

Answer:

The length of wire required is 44 cm.

Step-by-step explanation:

Given: The area of circular plot is 154 $cm^{2}$.

To find the length of wire required to fence the plot.

To determine the length of wire required for fencing we need to find the circumference of the plot.

Let's first find the radius of the plot.

We know that area of circle = $\pi r^{2}$

                                        $154=\pi r^{2}$        

                                         $\frac{154}{\pi } = r^{2}$      

                                      $\frac{154*7}{22 } = r^{2}$

                                           $49=r^{2} \\r=7$

So, the wire required for fencing $= 2\pi r$

                                                       $=2*\frac{22}{7}*7\\ =44$

Therefore, the length of wire required for fencing is 44 cm.

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