Answer:
A.
Step-by-step explanation:
r=diameter/2
radius=52/2 (Q)
Q =26
50 meters, because if 4cm is 5 m, then it would be 5( 4cm, which equals 5m) multiplied by 10( 8cm÷4cm= 2. 2×5m= 10). So 5m × 10m = 50m. Hope this helps!
sqrt (3/10)
sqrt(3)/sqrt(10)
no sqrt in the denominator, so multiply by sqrt(10)/sqrt(1)
sqrt(3) sqrt(10)
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sqrt(10) sqrt(10)
sqrt(30)/10
Choice D