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2 years ago

Find the diameter of a circle with an area of 94 square millimeters.

Mathematics

2 answers:

max2010maxim [7]2 years ago

5 0

Answer:

10.94 mm

Step-by-step explanation:

Formula to find the area of a circle is :

Area = π r²

Given that, the area of the circle is 94 mm²

<u>Now let us find the value of r ( radius ).</u>

Area = π r²

94 = π r²

94 ÷ π = r²

29.92 = r²

√29.92 = r

5.47 = r

<u>And now let us find the diameter of the circle.</u>

d = 2r

d = 2 × 5.47

d = 10.94 mm

Hope this helps you :-)

Let me know if you have any other quetions :-)

kozerog [31]2 years ago

4 0

Answer:

10.94.

Step-by-step explanation:

Using the formulas

A=πr2

d=2r

Solving ford

d=2/A

π=2·94

π≈10.94004

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The area of a rectangular playground is 16 square yards. The length of the playground is 4 times longer than

Alexxandr [17]

length = 8 yd and width = 2 yd

So, Option D is correct.

Step-by-step explanation:

Area of rectangular playground = 16 square yards

Width of playground = w

Length of playground = l = 4w

We need to find length(l) and width(w)

The formula used is:

$Area = Length * Width$

Putting values:

$Area = Length * Width\\16=4w*w\\16=4w^2\\w^2=\frac{16}{4}\\w^2=4\\Taking\,\,square\,\,root:\\\sqrt{w^2}=\sqrt{4}\\ w=\pm 2$

Since width of rectangle is always positive, so we will take w = 2

So. Width = 2

Length = 4w = 4(2) = 8

Hence, length = 8 yd and width = 2 yd

So, Option D is correct.

Keywords: Area of rectangle

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3 years ago

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mote1985 [20]

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2 years ago

If the length of rectangle is thrice of its breadth and it's perimeter is 32 cm then finds its area.

jeka57 [31]

Answer:

48 cm²

Explanation:

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Area of rectangle:

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