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3 years ago

how many meters is the circumference of a circle with a radius of 20 cm?

2 answers:

5 0

Circumference of a circle can be found using formula 2 * pi * radius

20 cm is 0.2 meters

2 * pi * 0.2
0.4 * pi ≈ 1.26

The circumference is approximately 1.26 meters.

Harman [31]3 years ago

4 0

First find the circumference of the circle.
Circumference: $2 \pi r$

Plug in 20 for the radius (r).
$2 \pi20$ = 125.66

The circumference of the circle is 125.66 cm.
Now to find this in meters... there are 100 centimeters in 1 meter.

Divide 125.66 by 100 to find how many meters this is.
125.66 ÷ 100 = 1.26

The circle's circumference is 1.26 meters.

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A man has a 10m X 10m square garden. In the center is a 2m X 2m square patch which he cannot use. He divides his usable space in

ra1l [238]

Answer:

4m X 6m

Step-by-step explanation:

This is because if there is a 2m square in the middle, there is 8 m of usable space left along both sides of the garden.

Because the 2m square was in the middle, there is 8/2 = 4m along each width of the 4 small rectangles.

Becuase 4m is the width, there is 10 - 4 = 6m along each rectangle's length.

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3 years ago

Vince weighs 160 pounds, and his friend Nadir weighs 140 pounds. Nadir calculated that his weight on another planet would be abo

vlabodo [156]

160/140 = x/56
cross multiply
(140)(x) = (160)(56)
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5 0

3 years ago

Read 2 more answers

The vertex of the function’s graph is given. Find c. y = x2 + 10x + c; (-5, -27)

castortr0y [4]

Actually I didn't see the (-5, -27), the answer would be -2.

5 0

3 years ago

20) Use the distributive property to factor the expression. 10xz − 20yz A) z(10x − 20y) B) 10(xz − 2yz) C) 10z(x − 2y) D) xyz(10

vekshin1

Answer:

The correct answer is C) 10z(x − 2y)

Step-by-step explanation:

To find this, we look for the greatest common factor of those two numbers. Each can be divided by 10 and each have a z. So we divide each term by 10z and put that on the outside of the parenthesis.

5 0

3 years ago

Question 3 of 10

GalinKa [24]

<h3>Answer: D) Cannot be determined</h3>

Explanation:

Choice A isn't the answer because we don't know anything about the angles, so we can't use the AA (angle angle) Similarity theorem.

Choice B isn't the answer because we don't have info about all three pairs of sides (we only have two pairs of sides).

Choice C isn't the answer in a similar way choice A isn't either. We don't know anything about the angles, so we can't use the "A" in "SAS".

Choice D is the only thing left. It turns out we don't have enough info to be able to determine if the triangles are similar or not.

3 0

3 years ago

​how many meters is the circumference of a circle with a radius of 20 cm?

how many meters is the circumference of a circle with a radius of 20 cm?