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3 years ago

Find the area of the circle. Use 3.14 for pi A = pi r2 A= [?]

Mathematics

1 answer:

rjkz [21]3 years ago

4 0

Answer:

A = 153.86 cm^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2 where pi is approximated by 3.14 and r is the radius

We are given a diameter of 14

r = d/2 = 14/2 = 7

A = 3.14 * 7^2

A = 3.14 * 49

A = 153.86 cm^2

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White raven [17]

Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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3 years ago

If the area of the blue square is 144 units2 and the area of the pink square is 1225 units2, then the length of the hypotenuse i

navik [9.2K]

Answer: 37 units

Step-by-step explanation:

$Blue=144units^2$ This also works as the height of the triangle.

$Pink=1225units^2$ This also works as the base of the triangle.

Let's call pink ''a'', and blue ''b''. The side we're looking for ''c'' is the hypothenuse.

To find the values of a and b, use the area formula of a square and solve for a side. In this case, since we're going to need the squared values, this step can be omitted.

$Formula: A=s^2$

$s=\sqrt[]{A}$

Let's work with Blue.

$s=\sqrt[]{144units^2} \\s=12units$

Now Pink.

$s=\sqrt[]{1225units^2}\\s=35units$

So we have a triangle with a base of 35 units and a height of 12 units.

Now let's use the pythagoream's theorem to solve.

$c^2=a^2+b^2\\c=\sqrt[]{a^2+b^2} \\c=\sqrt[]{(12units)^2+(35units)^2}\\c=\sqrt[]{144units^2+1225units^2}\\ c=\sqrt[]{1369units^2}\\ c=37units$

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3 years ago

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brilliants [131]

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