Question

the circumference of a circle whose area is 24.64m2 is

Answer 1

Answer

Area of circle = 24.64m²

=> πr² = 24.64

=> 22/7 × r² = 24.64

=> r² = 24.64 × 7/22

=> r² = 7.84

=> r = 2.8

radius = 2.8m

Now,

Circumference of circle = 2πr

= 2 × 22/7 ×2.8

= 1.76m

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Step-by-step explanation:

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Answer 2

Answer:

Circumference of circle = 17.6 cm

Step-by-step explanation:

Let the radius of circle = r

Given : Area of circle = 24.64 cm²

=πr²=24.64 cm²

= 22/7 × r²=24.64

= r²=24.64 × 7/22

= r²=24.64 × 7/22

= r²=24.64 × 7/22 = 1.12 × 7 = 7.84

= r = √7.84 = 2.8

Radius of circle = 2.8 cm

Circumference of circle= 2πr

= 2 × 22/7 × 2.8 = 2 × 22 × 0.4

= 44 × 0.4 = 17.6

Circumference of circle = 17.6 cm

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