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 π = 3.14)

Solution:

Diameter of the circular table cover = 1.5 m

Radius of the circular table cover = 1.5/2 m = 0.75 m

Circumference of circular table cover = 2πr

= 2 × 3.14 × 0.75 m

= 4.71 m

Therefore, the length of the required lace is 4.71 m.

The cost of 1 m lace is ₹ 15

The cost of 4.71 m lace = ₹ 15 × 4.71

= ₹ 70.65

☛ Check: NCERT Solutions for Class 7 Maths Chapter 11

Video Solution:

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

Class 7 Maths NCERT Solutions Chapter 11 Exercise 11.3 Question 6

Summary:

Saima wants to put a lace on the edge of a circular table cover of diameter 1.5 m. The length of the lace required is 4.710 m and also its cost is ₹ 70.65 if one meter of the lace costs ₹ 15.

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