Find the circumference of a circle whose diameter is 42cm
Answers
Answered by
4
Step-by-step explanation:
Circumference of a Circle = 2πr
and, radius, r = d/2 = 42/2 = 21 cm
Then, Circumference of circle = 2 × (22/7) × 21 = 132 cm
Answered by
8
Given :
- diameter of a circle = 42 cm
To find :
- circumference of the circle
Formula used:
- Radius of circle = diameter / 2
- circumference of the circle = 2×π × radius
Solution :
To find circumference first we will find radius of the circle :-
put diameter = 42
therefore, radius = 21 cm
Now we will find circumference :-
now put :-
- π = 22/7
- radius = 21 cm
Answer : 132 cm
______________________
Area of circle = πr²
Circumference of circle = 2πr
Area of square = (side)²
perimeter of square = 4× side
area of Rhombus = 1/2(diagonal 1)(diagonal 2)
Area of rectangle = length × breadth
Perimeter of rectangle = 2( length + breadth)
_________________________
Similar questions