3 years ago

What is the perimeter?

Mathematics

1 answer:

DanielleElmas [232]3 years ago

7 0

Answer:

Step-by-step explanation:

jest mutply it

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I need to find the volume of this rounded to the nearest tenth . will give brainliest

Grace [21]

Answer:

3.14*4^2*10≈502.65

Step-by-step explanation:

(The zero is in the tenths place and it doesn't round up)

The formula for the volume of a cylinder is V=pi*r^2*h

pi=3.14

r^2=Radius Squared

h=Height

I hope this helps!

5 0

3 years ago

Find the maximum rate of change of f at the given point and the direction in which it occurs. f(x, y) = 4y sqrt (x) , (4, 5) max

liubo4ka [24]

Answer:

Remember that the maximum rate of change of f at a point u is the length of the of the gradient vector evaluate in u, and the direction in which it occurs is in direction of the gradient vector evaluate in u.

The gradient vector of f is

$\triangledown f(x,y)=(\frac{\partial f}{\partial x},\frac{\partial f}{\partial y})=(2yx^{-\frac{1}{2}}, 4\sqrt x)$

Then, the maximum rate of change is $|\triangledown f(4,5)|=|(2*5*4^{-\frac{1}{2}}, 4\sqrt 4)|=|(5,8)|=\sqrt{5^2+8^2}=\sqrt89$ in the direction of (5,8).