Question

find the radius of the circle whose circumference is equal to the sum of the circumference of the circles having radii 15 cm and 8 cm

Answer 1

i hope this is the right answer

Answer 2

Answer:

Step-by-step explanation:

we know that

the circumference of circle = 2πr

where r is the radius

now.

the circumference of circle of radius 15 cm = 2π×15= 30π cm

&

the circumference of circle of radius 18cm = 2π×18 = 36π

According to question

the circumference of circle whose radius is r = 30π+36π = 66π

=> 2πr =66π

=> r = 33 answer