Question

The area of circular play ground is 22176cmsq find the cost of fencing this ground at rate of rupees 50 per meter​

Answer 1

Ar=22176m²

     area of circle = π r²

 (22176 × 7)÷22= r²

                         r²=7056

                         r =84

circumference is the fence of the circle=2πr

                                                                  =2 × 22/7 × 84

                                                                  =528m

                        

                    

now,

ATQ

COST ON TOTAL FENCING ON CIRCULAR field is 50/m²

So,

50 × 528

rs.26400

i hope it will help u

Answer 2

Answer:

$Given: </p><p></p><p>The area of a circular playground =A=22176m2.</p><p></p><p></p><p>To find out:</p><p></p><p>The cost of fencing the ground at the rate of Rs 50/m.</p><p></p><p></p><p>Solution:</p><p></p><p>The radius of  the  ground =r=πA=2222176×7 m=84 m.</p><p></p><p>∴ The circumference =C=2πr=2×722×84 m=528 m.</p><p></p><p></p><p>Now, the length of the fence = The length of the circumference.</p><p></p><p>∴ The cost of fencing the ground at the rate of Rs 50/m</p><p></p><p>=Rs 528×50=Rs 26400</p><p></p><p>$