Question

Draw concentric circle for the following measurements of radii/diameters. Find out the width of the circular ring.

d = 6.4 cm and d = 11.6 cm

Answer 1

d = 6.4 cm and d = 11.6 cm

r = `"d"/2`

r = `6.4/2` = 3.2 cm,

r = `11.6/2` = 5.8 cm

Step 1: Drawn a rough diagram and market the given measurements

Step 2: Taken any point O and marked it as the center.

Step 3: With O as center drawn a circle of radius OA = 3.2 cm.

Step 4: With O as center and drawn a circle of radius OB = 5.8 cm.

Thus the concentric circles C₁ and C₂ are drawn.

Width of the circular ring = OB – OA = 5.8 – 3.2 = 2.6 cm