A children’s park is of circular shape with radius 21 m. What is the length of fencing to be done at the boundary of the park?

121 m

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132 m

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144 m

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170 m

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Solution

The correct option is B
132 m

Length of fencing is nothing but the circumference of the circular park.
Circumference of circle with radius r

= 2 $π$ r = 2 x( $\frac{22}{7}$ ) x 21 x 21 = 132 m

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A children’s park is of circular shape with radius 21 m. What is the length of fencing to be done at the boundary of the park?

The correct option is B 132 m Length of fencing is nothing but the circumference of the circular park. Circumference of circle with radius r = 2πr = 2 x(227) x 21 x 21 = 132 m

The correct option is B
132 m

Length of fencing is nothing but the circumference of the circular park.
Circumference of circle with radius r

= 2 $π$ r = 2 x( $\frac{22}{7}$ ) x 21 x 21 = 132 m