find the radius and area of circle if circumference is 31.4 cm and take pie=3.14.
Bunti360:
radius = 5cm
area = 77.5 cm²
Answers
Answered by
3
Circumference =2pi×r
-------
31.4=2×3.14×r
r=31.4/(2×3.14)
r=10/2
r=5cm
Area=pi×r^2
Area=3.14×5^2
Area=78.5cm^2
-------
31.4=2×3.14×r
r=31.4/(2×3.14)
r=10/2
r=5cm
Area=pi×r^2
Area=3.14×5^2
Area=78.5cm^2
Answered by
5
Circumference =31.4
Pie=3.14
2πr=31.4
2×3.14×r=31.4
6.28×r=31.4
R=31.4/6.28=5
Area of circle=πr^2
=3.14×5×5
=78.5cm^2
Pie=3.14
2πr=31.4
2×3.14×r=31.4
6.28×r=31.4
R=31.4/6.28=5
Area of circle=πr^2
=3.14×5×5
=78.5cm^2
Similar questions