Answer:
113.04
Step-by-step explanation:
Surface area for a sphere is 4*pi*radius^2
4*3*3*3.14
113.04
Answer:
Ans:
i) y-int (0 , 2) and x-int (-2/3 , 0)
ii) y = 3x + 2
Step-by-step explanation:
<em>we know:</em>
m = 3 & point (0,2)
<em>i</em>
y-int is (0,2) because where x is 0 it intersects the y-axis
<em>ii</em>
<em>from this we can sub it into the point slope formula which is:</em>
y - y1 = m (x - x1) (y1 and x1 being the values from a point lying on the line)
y - 2 = 3 (x - 0)
y - 2 = 3x
<u>y = 3x + </u><u>2</u> < this is the equation
if you also need to find the x-int then:
to find x-int make y = 0 and solve for x
y = 3x + 2 3x = - 2
0 = 3x + 2 x = -2/3
therefore x-int is (-2/3,0)
Answer:
4 ( 4 + 4 + 4 )
Step-by-step explanation:
Ummmm, I believe the answer is 1,100