78-32=56
56=2x
x=28
X is equivalent to 28
For 49 It's 4*12 and 2*24 and 1*48 and for 64 it's 8*8 and 2*32
Formula for circumference: 2πr
r=2x+1
C=2π(2x+1)
distribute
C=4πx+2π
Answer:
The second one
Step-by-step explanation:
B c A
Because B has c and a, which is part of A (A={a, b, c})
