Answer:
a=4
Step-by-step explanation:
if a+5=2a+1
then 5-1 = 2a-a
so 4 = a
V = π r² h
V= π (4x+2)² (5x+4)
V = π (4x+2)(4x+2)(5x+4)
V = π (16x²+16x+4)(5x+4)
V= π(80x³+144x²+84x+16)
V= 251.33x³ +452.39x²+263.89x+50.27

originally. Then you reduces the side lengths a so it will be

Just note that 40% is the same as 2/5.<span />
Answer:-4x^2+6x
Step-by-step explanation: Muliply using the distributive property.
Hope this helps you out! ☺