6 x 10 =60
40 x 24=960
maybe
I REALLY DON'T KNOW
Answer:
c is correct , half of 63 is 31.5 and since the formulae for circumference is 2pir
then : 2×3.142 × 3.14 =197.82cm
181 rounded to the nearest ten is the 200
Answer:
A series of prime numbers starting with 9?
Answer:
t = 21
Step-by-step explanation:
The ball strikes the groujd when h = 0.

Since time must be positive, t = 21.