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2 years ago

Find the area of the circle if the square has an area of 900 in2. give your answer in terms of.

1 answer:

6 0

First find the square root of 900 to get one side of the square, which is 30 inches.
Formula for area of a circle: pi times the radius(squared)
The radius is 15 because one side of the square equals the diameter of the circle. 15 squared is 225.
3.14x225=706.5 inches squared

I hope this helps, because I did not have a diagram of the problem, but this should be the answer if the circle is inscribed in the square.

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Identify the surface with the given vector equation. r(s, t) = s sin 4t, s2, s cos 4t

k0ka [10]

Answer:

Circular paraboloid

Step-by-step explanation:

Given ,

$r(s,t)=ssin4t,s^2,scos4t$

Here, these are the respective $x,y,z$ axes components.

Component along x axis $r_i : ssin4t$

Component along y axis $r_j : s^2$

Component along z axis $r_k : scos4t$

We see that , from the parameterised equation , $r_i^2+r_k^2=s^2sin^24t+s^2cos^24t\\r_i^2+r_k^2=s^2\\r_i^2+r_k^2=r_j$

This can also be written as :

$x^2+z^2=y$

This is similar to an equation of a parabola in 1 Dimension.

By fixing the value of z=0,

We get $y=x^2$ which is equation of a parabola curving towards the positive infinity of y-axis and in the x-y plane.

By fixing the value of x=0,

We get $y=z^2$ which is equation of a parabola curving towards positive infinity of y-axis and in the y-z plane.

Thus by fixing the values of x and z alternatively , we get a CIRCULAR PARABOLOID.

4 0

2 years ago

Simplify. +6 - 4 = please help ..........

Step2247 [10]

Answer:

Step-by-step explanation:

it's literally 6-4 = 2

8 0

2 years ago

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If postage costs $.54 the 1st ounce and $.22 for each additional ounce calculate the cost of mailing a 10 ounce envelope.

Pavel [41]

0.54+(0.22*9) is equal to 2.52

5 0

2 years ago

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What is the following product? 3 root 5 times root 2

Crazy boy [7]

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2 years ago

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Nate wants to predict how long people use the internet each day based on their age. The table below shows the age (in years) and

Vika [28.1K]

Answer:

Graph A is correct on Khan Academy! Hope this helps!

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2 years ago

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