Question

2. What is the largest area of a circle that can be made from a piece of thread 25.2 cm long (assume no knot)?

Answer 1

Answer:

12.6 cm²

Explanation:

25.2 cm = Circumfernce

and,

Circumference=2π r

therefore,

2π r=25.2

and,

r= (25.2*7) / 44 ............ equation (1)

now,

area of circle= π r² ...........eq (2)

putting eq.(1) in eq (2) ,we get

area=12.6cm²

Answer 2

Answer.

12.6cm²

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