Aplumber 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

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).

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

what are you trying find out?

step-by-step explanation: