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2 years ago

The diameter of a circle is 18 cm what is its area in terms of pi

Mathematics

1 answer:

NikAS [45]2 years ago

3 0

Answer:

A = 81π cm²

Step-by-step explanation:

The formula for area of a circle is A = πr², where r is the radius. The radius is half the diameter, so our radius for this problem is

18/2 = 9. So the area is..

A = π(9²) = π(81)

A = 81π cm²

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The pair of linear equations 2x-3y = 14 and 3x - 2y = 4 has solution(s).<br><br>answer plz....

Lesechka [4]

Answer:

2x -3y =1 and 3x-2y= 4 has

Step-by-step explanation:

The pair of linear equations 2x-3y=1 and 3x-2y=4 has one unique solution. , then it has a unique solution other wise not. Since , , it means the pair of linear equations has only one unique solution. Hence, the pair of linear equations 2x-3y=1 and 3x-2y=4 has only one unique solution.

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2 years ago

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Irina18 [472]

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2 years ago

3•x2 + 1(2)<br> (2)x-2(3)

Marina CMI [18]

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2 years ago

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Paha777 [63]

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2 years ago

A sphere has a radius of 7.5 centimeters. To the nearest cubic centimeter, what is the volume of the sphere?

Naya [18.7K]

Volume of sphere = 1766.25 cm^3

Step-by-step explanation:

The radius of sphere = 7.5 cm

Volume of sphere = ?

The formula used is:

$Volume= \frac{4}{3}\pi r^3$

Putting values:

$Volume= \frac{4}{3}\pi r^3\\Volume=\frac{4}{3}*3.14* (7.5)^3\\Volume= 1766.25\,\,\,cm^3$

So, Volume of sphere = 1766.25 cm^3

Keywords: Volume of sphere

Learn more about Volume of sphere at:

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2 years ago