Answer:
Step-by-step explanation:
Given
diameter of cone
radius is
The slant height of the cone
The surface area of a cone is
Substitute the value
I think the answer is B!
Hope this helps
7.07
5sin90=xsin45
5/sin45=7.07
7,200 I believe
x² + 2x - 5
(f + g)(x) = f(x) + g(x)
f(x) + g(x)
= 2x + 3 + x² - 8 ← collect like terms
= x² + 2x - 5