1 Inch equals 2.54cm, so 81cm would do 31.89 inches
The circumference = 2 x r x pi If your diamter is 81cm then your circumference is 254.5cm If your radius is 81cm then your circumference is 508.9cm
Approximately 12.73cm
if you have a picture you could count around the square
Area for square is Base X Height. Since the length is all equal FOR a square The base and height is both 9cm So the answer is 81cm
1 Inch equals 2.54cm, so 81cm would do 31.89 inches
it is 81cm
The circumference = 2 x r x pi If your diamter is 81cm then your circumference is 254.5cm If your radius is 81cm then your circumference is 508.9cm
Approximately 12.73cm
cc
if you have a picture you could count around the square
cm is length, ml is cm3 which is 3 dimensional. you cannot compare length with volume
im not too sure if im average but i jumped 70cm from a standstill and 81cm with a running start
1200 + 1500 + 81 + 65 = 2846 cm = 28 m, 46 cm
69 cm x 51 cm = 27.16 inches x 20.08 inches
Well let say the average person in 81cm wide (32 in), and 1.4km is 140 000cm140 000/81=1728 people
Area for square is Base X Height. Since the length is all equal FOR a square The base and height is both 9cm So the answer is 81cm