Question

Do it quickly and send ​

Answer 1

Answer:

a)3cm

Step-by-step explanation:

Two concentric circles share a common centre.

Hence it is asking the width of annulus which means the difference between both the radii gives the width of the annulus which is formed by drawing the circle of radius 5 cm within the big circle of radius 8cm.

Hence width of annulus = Radius of Big circle - radius of circle inside it

= 8cm - 5cm

= 3cm

hence a)3cm is right.

Hope it helps you