Question

find the radius of the circles with the given diameters


a)4 cm
b)8 cm
c)7cm
d)5cm

​

Answer 1

Radius = 1/2 Diameter

a - 2
b - 4
c - 3.5
d - 2.5

Answer 2

Answer:

a) Diameter = 2(4) = 8 cm. Hence, diameter of the circle with radius as 4 cm is 8 cm.

b) the radius of the circle will be 4cm.

c) we know that circumference of circle is =πd, where d is diameter of circle.

So, here circumference is = π×7cm

= 22/7×7cm

Circumference =22cm

d)For a circle, Diameter=2×Radius

If radius =5cm

Then, Diameter=2×5=10cm