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3 years ago

I need help with this problem

Mathematics

1 answer:

leva [86]3 years ago

3 0

Answer:

about 2.253 centimeters

Step-by-step explanation:

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The number of cubic units in the volume of a sphere is equal to the number of square units in the surface area of the sphere. Wh

viktelen [127]

Answer:

Radius of sphere is 3 units.

Step-by-step explanation:

Volume of sphere is given by $4/3 \pi r^3$

surface area of sphere is given by $4 \pi r^2$

where r is the radius of the sphere.

Given that

The number of cubic units in the volume of a sphere is equal to the number of square units in the surface area of the sphere.

we equate formula of Volume of sphere and surface area of sphere

assuming r as the radius.

thus,

$4/3 \pi r^3 = 4 \pi r^2\\\\4/3 \pi r^3/ 4 \pi r^2 = 1\\=>r/3 = 1\\=> r = 3$

Thus, radius of sphere is 3 units.

5 0

3 years ago

Will give brainliest to correct answer

nordsb [41]

Answer:

The answer is b

Step-by-step explanation:

6 0

3 years ago

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It says use cofunction but still i didnt understand

torisob [31]

Answer:

- $\frac{\pi }{22\\}$

Step-by-step explanation:

$\frac{5\pi }{11}$ -pi/2

5 0

3 years ago

X = sin 1/2θ, y = cos 1/2θ, −π ≤ θ ≤ π(a) eliminate the parameter to find a cartesian equation of the curve.

Roman55 [17]

First solve for theta in 'x' equation:
$\theta = 2 sin^{-1} x$

Substitute into 'y' equation:
$y = cos (\frac{2 sin^{-1} x}{2}) = cos (sin^{-1} x)$

Simplify by rewriting cos in terms of sine.
Using pythagorean identity: $sin^2 + cos^2 = 1$

$cos = \sqrt{1-sin^2} \\ \\ y = \sqrt{1-sin^2 (sin^{-1} x)}$
Simplify using inverse function property: $f(f^{-1} (x)) = x$

$y = \sqrt{1 - x^2}$

5 0

3 years ago

Read 2 more answers

PLEASE HELP

lubasha [3.4K]

Answer:

385 miles

Step-by-step explanation:

6 0

3 years ago