Question

A plumber is making steel ring to fit around a pipe with diameter
of 5 centimeters. How long does the steel ring need to be to fit
around the pipe? (Use 3.14 for Pi.)

A. 15.7 cm
B. 19.63 cm
C. 31.4 cm
D. 78.5 cm

Answer 1

Answer:

The circumference of the pipe can be derived by 2(pi) r = 2 (3.14) (2.5)= 15.7. Hence the steel ring needs to be 15.7 cm. (option A).