Question

find the radius of the circle whose circumference is 5 times the circumference of the circle with diameter 18cm

Answer 1

Answer:

let the radius of circle be x,

circumference of circle=2πx

ATQ,

2πx=5(2π×9)

2x=90

x=45

hence,radius of circle is 45cm.

Answer 2

Answer:

45.

Step-by-step explanation:

let the radius of circle be x,

circumference of circle=2πx

ATQ,

2πx=5(2π×9)

2x=90

x=45

hence,radius of circle is 45cm.