Answer:
Step-by-step explanation7:
As we knw that the dr/dt = 2
And The area of the circular slick is given by formul
A = (pi)r^2.
Now lets take derivative:
<span>dA/dt=2πrdr/dt
As we knw that radius is 25
so</span><span>dA/dt=2π(25)(2)=100π
which is equal to
=314.16 per minute this is how area is increasing
now for part b
</span><span> t = 4, the radius will have increased to 8 m.
now we will put the values in formula dr/dt
</span>so it will be.dA/dt=2π(8)(2)
=32π
=100.53 is the answer
hope it helps
Answer:
C
Step-by-step explanation:
Make the equation from the blocks:
-7x + 7 = 5x + 16
Then simplify:
Subract 7 from both sides:
-7x = 5x + 9
Add 7x:
0 = 12x + 9
Subtract 9:
-9 = 12x
x = -9/12 = -3/4
Angle P is 50 degrees
OP is 17cm
They are similar quadrilaterals so their corresponding parts are congruent.
