Answer:
He climbed 19 steps
Step-by-step explanation:
Let steps climbed in 9.5 seconds = z
If 24 steps = 12 seconds
then: z = 9.5 seconds
Using criss cross method
24 x 9.5 = 12 x z
228 = 12 z
z = 228/12
z = 19 steps
Answer:
42.73
Step-by-step explanation:
2*pi*r = 2*pi*6.8=42.73
I believe it is C but i can’t be sure but I hope u get it right!