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Tuesday, October 30, 2007
MATHS PROBLEM
Jim has a broken fan belt on his car. The belt goes around 2 pulleys, whose centers are 15 cm apart, and each pulley is 4 cm in diameter. How long should the belt be?
What you have to do to solve this problem is to know the formula of the perimeter of a circle. This formula is 2r·π. So, 2r=4 π=3,14... The solution is:
15cm+15cm+4·π= 30cm+4π=42,46cm is longitude of the belt.
1 comment:
What you have to do to solve this problem is to know the formula of the perimeter of a circle. This formula is 2r·π. So, 2r=4 π=3,14... The solution is:
15cm+15cm+4·π= 30cm+4π=42,46cm is longitude of the belt.
Signed: Fernando Cedena
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