Question

find area of circle
diameter=42

Answer 1

Diameter = 42

Radius = 42÷2

=21

Area of circle=πr²

=22/7×21×21

=1386cm²

Answer 2

Answer:

1386 cm²

Step-by-step explanation:

area of a circle = πr²

and diameter is given=42cm

so radius is = 21 cm

now

      area of circle=22/7*21*21

                           = 22/7*3*21

                          = 1386 cm²