Question

The radii of two circles are 3.5 cm and 7 cm. Find their: (i) Diameters (ii) Circumference (iii) Ratio of circumference​

Answer 1

Step-by-step explanation:

1)diameters=7cm,14cm

2)circumference=22cm,44cm

3)Ratio =1:2

Answer 2

Step-by-step explanation:

>Diameter = 2 × Radius

>Circumference = 2π × radius

Circle 1,

Diameter = 2 × 3.5 = 7cm

Circumference = 2 × 22/7 × 3.5 = 22cm

Circle 2,

Diameter = 2 × 7 = 14cm

Circumference = 2 × 22/7 × 7 = 44cm

Ratio of Circumference = 22 / 44 = 1/2 = 0.5

@zeddmaan☺️