Hey there! I'm happy to help!
To find the surface area of a sphere, here is what you do.
You square the radius.
4²=16
You multiply by 4.
16×4=64
And you multiply by pi!
64×π=64π
Therefore, the surface area of the sphere is A. 64π units². It's that easy!
Now you can find the surface area of a sphere! Have a wonderful day! :D
Answer:
6
Step-by-step explanation:
The period of a sinusoidal function in the form a * cos (b (x + h)) + m is 
. Therefore, we can see that "b" in g(x) is 1/3 and 1/3 substituted into is 2/1/3 which is 6.
Answer:
(a)
(b)
Step-by-step explanation:
The sum of the angles inside a triangle must be 180°, but from the right angle we already have 90°, so the sum of the two acute angles is 90°, then:
Let 
be the length of the shadow and 
the height of the three, so tan(35) is
Solving that last equation for h:
Answer:
I think your anwser would be 4 im not sure
Step-by-step explanation:
Answer:
-54
Step-by-step explanation:
Find f( - 3) × g(4),
for f(x) = x^ - 3
f(-3) = -3^ - 3= -3 × -3 × -3= -27
and g(x) = x^½
g(4) = 4^½ = 2^2^½ = 2 ^1 = 2
f( - 3) × g(4) = -27 ×2 = -54
