Find the area and circumference of 16.1cm

If 16.1cm is a radius of circle:

# Area = Pi X R{2}

= 3.141592654 X 16.1 square

= 814.3 cm square

# circumference = Pi X 2 X R

= 3.141592654 X 2 X 16.1

= 101.2 cm

# if 16.1 is a diameter:

#Area = Pi X D/2 square

= 3.141592654 X 16.1 divide by 2 square

= 203.6 cm square

#Circumference = Pi X D

= 3.141592654 X 16.1

=50.6 cm

That's it it. a bit long cuz I dun know what exactly what they given Radius or Diametre.