Question

please answer this question fast
the copper wire when bent in the form of a square encloses an area of 121 cm square. if the same wire is bent into the form of a circle, find the area of the circle

Answer 1

Answer:

side X side = 121 cm^{2} [/tex]

SIDE = 11 cm

4 X SIDE = 44 cm

Perimeter of circle = length of wire

length of wire = 44cm

length of wire = circumference of the circle

2 \pi r2πr = 44 cm

\pi rπr = 22cm

r = 7cm

area of circle = \pi r ^{2}πr

2

= 154 cm^{2}cm

2

Step-by-step explanation:

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Answer 2

Answer:

$Given</p><p>a </p><p>2</p><p> =121</p><p>⇒a=11</p><p>L=4a=44</p><p>Given 2πr=44</p><p>⇒2× </p><p>7</p><p>22</p><p> </p><p> ×r=44</p><p>∴r=7</p><p>Area =A=π×49=49π cm </p><p>2</p><p> </p><p>=49× </p><p>7</p><p>22</p><p>$