Question

Saima wants to put a lace on the edge of a circle table cover of diameter 1.5 cm. Find the length of the lace required and also find its cost if are meter of the lace costs rs 15

Answer 1

I hope the diameter of table is 1.5m as the table can't be too small.

Length of lace required would equal the circumference of table.

Length of lace required = πd = 3.14*1.5 = 4.71 m.

Cost of lace = 4.7 * 15 = 70.65 rupees.

Answer 2

Given that Diameter of the circular table d = 1.5m.

Then the radius of the circular table r = d/2

                                                               = 1.5/2

                                                               = 0.75m.


We know that Circumference of the circular table = 2pir

                                                                                    = 2 * 22/7 * 0.75

                                                                                    = 33/7

                                                                                    = 4.71m.


Therefore the length of lace required = 4.71m.


Given that cost of 1m lace = 15 rupees.

Then the cost of 4.71 m lace = 4.71 * 15

                                                = 70.65 rupees.


Therefore the cost = 70.65 rupees.


Hope this helps!