This should be -4x^2-4x+4.
Answer:
<h2>240.37 cm^2</h2>
Step-by-step explanation:
The question is on the mensuration of solids, a cylinder
Given data
height of cylinder h= 4 cm
diameter d= 9 cm
radius = d/2= 9/2= 4.5 cm
we know that the surface area of cylinder is
Substituting our data into the expression we have
<em> Therefore the total surface area is 240.37 cm^2</em>
Sin x cos x ( tan x - 1) = 0
so one solution is tan x = 1 giving x = 45, 225 degrees ( for x 0 to 360)
sin x cos x = 0 so either sinx = 0 giving x = 0, 180, 360 degrees
or cos x = 0 giving x = 90, 270
answer is 0, 45, 90, 180, 225, 270, 360 degrees ( for 0 =< x >= 360)
Answer:
use a math app or calculator
Step-by-step explanation: