R=50 because 8×50=400 so that is what r would equal
The exponent would be 5 the fifth power, because since the number your using to multiply it by is 5 and you are multiplying is by 5 fives it would be 5 to the fifth power
=1/2
you add both on each side then subtract 2 from you anser
Answer:
see explanation
Step-by-step explanation:
A = πr² ← r is the radius and r =
d ← d is the diameter
Hence
π (
d)² = A, that is
= A ( multiply both sides by 4 )
d²π = 4A ( divide both sides by π )
d² =
( take the square root of both sides )
d = 
Answer:
Step-by-step explanation:
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I think it is 0.05 but i do if it is right your welcome if it is wrong I'm sorry