Question

Find the circumfrence of semi circle with diameter 1.2 cm

Answer 1

Answer:

Circumference of semi-circle ≈ 1.886cm ('≈'this sign means approximately)

Step-by-step explanation:

Given:

The diameter of circle = 1.2cm

Circumference of semi-circle =?

Now,

Radius of circle = 1.2/2 = 0.6cm

Circumference of semi-circle = Circumference of circle/2

                                                = 2πr/2

                                                = πr = 22/7 × 0.6 = 13.2/7

                                                ≈ 1.886cm