Saima wants to put a lace on the edge of a circular table cover of diameter 1.5 m. Find the length of the lace required and also find its cost if one meter of the lace costs ₹ 15. $(Take\ \pi=3.14)$
From the question it is given that,
Diameter of the circular table $= 1.5\ m$
We know that, radius $(r)=\frac{d}{2}$
$=\frac{1.5}{2}$
$=0.75\ m$
Then, the Circumference of the circle$=2\pi r$
$=2\times 3.14\times 0.75$
$=4.71\ m$
So, the length of lace$=4.71\ m$
Cost of $1\ m$ lace$=Rs.\ 15$ [given]
Cost of $4.71\ m$ lace $=Rs.\ 15\times 4.71$
$=Rs.\ 70.65$
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