Q 73. Find the ratio between perimeter of the 2 circles c1 and c2 if one is having radius is 9 and another having 277 Ops: A 1:3 B. 2:3 C 3:2 D. 3:1
Question
Q 73. Find the ratio between perimeter of the 2 circles c1 and c2 if one is having radius is 9 and another having 277
Ops:
A 1:3
B. 2:3
C 3:2
D. 3:1
Solution
The perimeter of a circle, also known as the circumference, is calculated by the formula 2πr, where r is the radius of the circle.
For circle c1 with radius 9, the perimeter is 2π*9 = 18π.
For circle c2 with radius 277, the perimeter is 2π*277 = 554π.
The ratio of the perimeters of c1 to c2 is therefore 18π : 554π.
This ratio simplifies by dividing both sides by π, resulting in 18 : 554.
This ratio can be further simplified by dividing both sides by their greatest common divisor, which is 2, resulting in 9 : 277.
So, the ratio between the perimeters of the two circles is 9:277, which is not listed in the options A, B, C, or D.
Similar Questions
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