a piece of wire is bent in the shape of an equilateral triangle of side 4.4 centimetre if this wire is rebent to form a circle find the radius and the area of the circle
Answers
Answered by
2
Answer:
If 4.4 is the length of first side then the total perimeter would be 4.4×3=13.2
If it is bent then the circumference of the circle would be 13.2cm
Formula for circumference = 2πr
Therefore 2×22/7×r = 13.2cm
13.2÷2 = 6.6
22/7×r = 6.6
r = 6.6×7/22
Or
r = (66×7)/(22×10)
r = (3×7)/10
r = 21/10 = 2.1
R = 2.1 cm
Area of circle = π r^2
= (22/7)×2.1×2.1
=22×0.3×2.1
= 13.86 m^2
Answered by
1
Answer:
Step-by-step explanation:
Similar questions