To find x you add the angles and then subtract that from 180
Answer:
(x+4)(2x+1)
Step-by-step explanation:
1. 2x^2+8x+x+4 ----- split the second term in 2x^2 + 9x+4 into two terms.
2. 2x(x+4)+(x+4) ----- Factor out common terms in the first two terms, then in the last two terms.
3.(x+4)(2x+1) ------ factor out the common term x+4
Use the formula for the SA of cylinder to solve which is 2pir^2 + Pi r h.
Plug in the values for each variable and that will be the surface area.
Answer:
first one
Step-by-step explanation: