Answer:
42
Step-by-step explanation:
g(4) = 2x^2+5
= 2(4)^2+5
= 2(16)+5
= 32+5
= 37
f(g(4)) = 21+3sqrt(x+12)
= 21+3sqrt(37+12)
= 21+3sqrt(49)
= 21+3(7)
= 21+21
= 42
circumference=2πr
=2×3.14×8.5
=53.38cm
what do you need help with ???
i honestly dont know
any of them work
