Question

find the circumference and area when the diameter is 3.6 m

Answer 1

Step-by-step explanation:

diameter-3.6m

radius- 1.8

therefore,

circumference of the circle=2πr

2×22/7×1.8

11.314 m

area of the circle = πr^2

= 22/7×1.8×1.8

=10.182

Answer 2

Answer:

Circumference = 3.6π m

Area = 3.24π m²

Step-by-step explanation:

As we know that, there are some properties of circle which produces some formula for calculating radius and area of a circle.

[ Radius = Diameter / 2 ]

[ Circumference = 2πr ]

[ Area = πr² ]

Here, diameter is given

Diameter = 3.6 m

As we know that the relation between the diameter and the radius of a circle.

[ Diameter = 2 × Radius ]

=> Diameter = 2 × Radius

=> 3.6 m = 2 × Radius

=> 1.8 m = Radius

[ .°. Radius = 1.8 m ]

As we know that,

[ Area = πr² ]

Area = π (1.8)²

=> Area = 3.24π m²

[ .°. Area = 3.24π m² ]

Now, for finding the circumference of a circle or perimeter of a circle.

[ Circumference = 2πr ]

=> Circumference = 2π × 1.8

=> Circumference = 3.6π m

[ .°. Circumference = 3.6π m ]

*{ value of π can be taken as 3.14 or 22 / 7 or 355 / 113 }

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