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3 years ago

Which is the circumference of the circle

Mathematics

1 answer:

geniusboy [140]3 years ago

6 0

Answer:

The answer is D, 47.1.

Step-by-step explanation:

Circumference is the diameter multiplied by pi, 15 * 3.14 is 47.1, so your current choice is correct.

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The constant of proportionality is the ratio between two directly proportional quantities. Two quantities are directly proportional when they increase and decrease at the same rate. The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other.

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3 years ago

Based on the audio, what is an activity Carlos doesn't do every morning?

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3 years ago

You roll a number cube and record an even number 10 times in a row. As the number of times, you roll an even number increases, w

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Step-by-step explanation:

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2 years ago

A graphics designer is designing an advertising brochure for an art show. Each page of the brochure is rectangular with an area

kramer

Answer:

Step-by-step explanation:

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3 years ago

All the edges of a cube have the same length. Tony claims that the formula SA = 6s, where s is the length of

Darina [25.2K]

Answer:

Here's what I get

Step-by-step explanation:

a. Net of a cube

Fig. 1 is the net of a cube

b. Does the formula work?

Tony's formula works if you ignore dimensions.

There are six squares in the net of a cube.

If each side has a unit length s, the total area of the cube is 6s.

c. Will the formula work for any rectangular prism?

No, because a rectangular prism has sides of three different lengths — l, w, and h — as in Fig. 2.

d. Area of a rectangular prism

A rectangular prism has six faces.

A top (T) and a bottom (b) — A = 2×l×w

A left (L) and a right (R) — A = 2×l×h

A front (F) and a back (B) — A = 2×w×h

Total area = 2lw + 2lh + 2wh

If l = 5 m, w = 6 m and h = 8 m,

$\begin{array}{rl}A &=& \text{2$\times$ 5 m $\times$ 6 m + 2$\times$ 5 m $\times$ 8 m + 2 $\times$ 6 m $\times$ 8 m}\\&=& \text{60 m}^{2} + \text{80 m}^{2} + \text{96 m}^{2}\\&=& \textbf{236 m}^{2}\\\end{array}$

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3 years ago