Question

Rashi wants to put a lace on the edge of a circular
table cloth of diameter 1.4 m. Find the length of
the lace required and also find its cost, if 1 metre
Jáce costs Rs 12.50.​

Answer 1

Answer:

perimeter = 2πr

therefore 2*0.7*22/7= 4.4 m

there the cost = 4.4*12.5 = Rs.55

Answer 2

Answer:

as the lace is attached to the edge of the cloth we require the circumference of the circular piece of table cloth.

d=1.4m

r=0.7

circumference=2×pi×r

=4.396m

1m of lace = Rs.12.50

8.792m of lace = 4.396×12.50

=Rs.54.95=Rs.55

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