Need help i got first attempt wrong for this i think

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

Iwill give you ! what is the measure of ∠v ?