Answer:
C = 6pi or approximately 18.84 mm
Step-by-step explanation:
The circumference of a circle is
C = pi *d
C = pi *6
We can approximate pi by 3.14
C = 3.14*6
C =18.84
When an spherical balloon volume is increasing at the rate of then the diameter of the balloon is increasing
How can we find the rate of change of balloon's diameter ?
The volume of a spherical balloon is
In form of diameter we can write as
Now we will differentiate both sides wrt to we get
Given in the question
thus when we substitute the values we get
Learn more about the differentiation here:
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Answer:
7y(3x+2)
you take out the 7y from both sides
Solution,
y = -x-4......(i)
3x + y =- 16.......(ii)
Now,
Substituting the value of y in equation (ii)
or, 3x + (-x-4)= -16
or,3x - x - 4 = -16
or, 2x= -16 +4
or, x = -12/2
: x = -6
Then,
Substituting the value of x in (i) equation;
or,y= -(-6) - 4
or,y= 6 - 4
: y =2
Coordinates of the point C is: (-4.1, -2.5)