diameter of a circle is 8cm then find out area and perimeter
Answers
Given:
☛ diameter of circle = 8 cm
We know, diameter = 2 × radius
=> radius = 4 cm
To Find:
☛ Area of circle
☛ perimeter of circle
Solution:
We know,
➜ Area of circle = π × radius²
☛ π × 4²
☛ 16π cm²
Also,
➜ Perimeter of Circle = 2 × π × radius
☛ 2 × π × 4
☛ 8π cm
You can substitute the value of π, but writing 8π instead of 8×3.14 => 25.12 , is also fine.
❥
Diameter of a circle is 8 cm. Then find out the area and perimeter of the circle.
❥
Area of circle is 50.29(≈)cm² and perimeter of circle is 25.14(≈)cm.
❥
•Given :-
- Diameter of the circle = 8 cm.
•To find :-
- Area and perimeter of the circle.
• Solution :-
Let the radius of the circle be r cm.
Diameter = 8 cm.
We know,
★
So, Radius (r) = 8/2= 4 cm.
We know,
★
Area of circle= πr²
→Area of circle=
→Area of circle=
→Area of circle= 50.29(≈)cm²
____________________________
We know,
★
Perimeter of circle= 2πr
→ Perimeter of circle=
→Perimeter of circle=25.14(≈)cm