Question

Find the circumference of the circle whose area is 16th times the area of circle with diameter 7 cm ​

Answer 1

Step-by-step explanation:

diametrr of another circle=7cm.

radius=3.5cm.

area of the second circle=π×r^2=22/7*3.5*3.5=38.5cm^2.

area of the first circle=38.5*16=616cm^2.

π×r^2=616

22/7*r^2=616

r=14cm.

circumference=88cm.