Question

Saima wants to put a lace on the edge of a circular table cover of diameter $1.5m$. Find the length of the lace required and also find its cost if one diameter of the lace costs $Rs15$. (Take $\pi =3.14$)

Answer 1

circumference $=\pi d=1.5\pi m$

length of lace required = circumference of circle

$=1.5\times 3.14=4.71m$

length of lace required $=4.71m$

one meter of lace $=Rs.15$

$4.71m$ lace $=$?

$=\frac{4.71\times 15}{1}=Rs.70.65$

It costs $70.65Rs.$ to buy $4.71m$ of lace