Question

Q.1 Find. (a) Diameter = ? When Radius =4cm. (b) Radius = ? When Diameter =20cm

Answer 1

Answer:

A.) = 8cm and B.) = 10cm

Step-by-step explanation:

A.) Diameter = Radius × 2 = 4cm × 2 =8cm

therfore, Diameter = 8cm

B.) Radius = Diameter ÷ 2 = 20cm ÷ 2 = 10cm

therfore, Radius = 10 cm

Answer 2

Answer:

Diameter is double the radius = 2 x R

Radius is half the diameter = Diameter/2

Step-by-step explanation:

If R = 4cm

Then diameter= 8cm

If Diameter = 20cm

Then Radius = 10cm

Hope that helps :)