Solve this sum : the diameter is given as 3.6 m. Find the radius, circumference and area of the circle
Answers
Answer:
Radius is 1.8 m
Circumference is 3.6π m
Area is 3.24π m^2
Step-by-step explanation:
From the properties of circle :
- Radius = diameter / 2
- Circumference of circle = 2πr , where r is the radius
- Area of circle = πr^2
Here,
Diameter of the circle is 3.6 m
Relation between radius & diameter of a circle :
= > Diameter = 2 radius
= > 3.6 m = 2 x radius
= > 1.8 m = radius
Area of the circle :
= > πr^2
= > π( 1.8 m )^2
= > 3.24 π m^2
Circumference of the circle :
= > 2πr
= > 2 x π x 1.8 m
= > 3.6 π m
*{ value of π can be taken as 3.14 or 22 / 7 or 355 / 113 }
Answer:
Radius = 1.8 m
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 ]
Now, for finding the area of a circle.
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 ]