One perimeter = 2πr = 7π m
so 30 of them would be 30(7π) m = .... m
(nobody uses 22/7 for π anymore since scientific calculators were invented 48 years ago)
A string is wound 30 times around a cylindrical object of diameter 7m. calculate the length of the string.(Take pi =22/7).
5 answers
A string 30tins around a cylinder object of diameter 7m .calculate the length of the tin string
210
22/7×7=22
Actually, 22/7 x 7 = 22 which is the circumference of the cylinder.
To calculate the length of the string wound around the cylinder, we need to multiply the circumference by the number of times the string is wound around the cylinder.
So, the total length of the string would be:
22 x 30 = 660 meters
Therefore, the length of the tin string is 660 meters.
To calculate the length of the string wound around the cylinder, we need to multiply the circumference by the number of times the string is wound around the cylinder.
So, the total length of the string would be:
22 x 30 = 660 meters
Therefore, the length of the tin string is 660 meters.
2 answers