Answer:
Step-by-step explanation:
radius 70/2=35 cm
circumference=2πr=2π×35=70π cm
time taken to complete one revolution=0.8 s
or distance covered in 0.8 s=70π
distance covered in 1 s=70π/0.8=700 π/8=175 π/2 s=87.5 π≈274.9 cm
speed=274.9 cm/s=2.749 m/s
Answer:
3 times faster
Step-by-step explanation:
times faster
Answer:
It should be the second answer!
Step-by-step explanation:
Answer:
C. 13.6
Step-by-step explanation:
a^2+b^2=c^2
64+121=185
square root of 185 = 13.6