Question

Road 3.5 metre wide surrounds a circular Park whose circumference is 88 metre find the cost of paving the road @ rupees 60 per metre square​

Answer 1

Answer:

rupees 20790

Step-by-step explanation:

circ. = 88 or 2πr

so, 2*22/7*r = 88

2r= 88*7/22

r= 44*7/22

r= 2*7

r=14 m

now... if the road extends 3.5 m

we get 17.5 m

so, area is 22/7*17.5²

22*2.5*17.5

=962.50

now, area of only park= 22*2*14=616

so... area of road= 962.50

                            - 616

                              -------------

                               346.5

so, money needed is 346.5

                                  X 60.0

                                    -----------

                                    20790

so... 20790 rupees required  

please mark as BRAINLIEST