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3 years ago

What is the radius of a circle with a circumference of 15 cm

Mathematics

1 answer:

schepotkina [342]3 years ago

4 0

Answer: The answer that I got is 2.39, i'm not fully sure if it is correct though.

Step-by-step explanation: First, you divide the circumference by pie, the you divide that answer by 2 to get the radius.

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In a triangle ABC, tan (a) = 20/21. Find sin (a) and cos (a)

sesenic [268]

Answer:

sin(a)=20/29

cos(a)=21/29

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3 years ago

A box of pencils is 5 1/4 inches wide. Seven pencils, laid side by side, take up 2 5/8 inches of the width. How many inches of t

Andre45 [30]

Answer: Width of box is not taken up by pencils = $2\dfrac58\text{ inches}$

Width of each pencil $=\dfrac38\text{ inches}$

Step-by-step explanation:

Given: Width of pencil box = $5\dfrac14\text{ inches}=\dfrac{21}{4}\text{ inches}$

Width of seven pencils = $2\dfrac58\text{ inches}=\dfrac{16+5}{8}\text{ inches}=\dfrac{21}{8}\text{ inches}$

Width of box is not taken up by pencils = Width of pencil box - Width of seven pencils

$\left \{ {{y=2} \atop {x=2}} \right. \dfrac{21}{4}-\dfrac{21}{8}\\\\=\dfrac{21\times2-21}{8}\\\\=\dfrac{21}{8}\text{ inches}=2\dfrac58\text{ inches}$

Width of box is not taken up by pencils = $2\dfrac58\text{ inches}$

Width of each pencil = (Width of seven pencils ) ÷ 7

$=\dfrac{21}{8}\div7\\\\=\dfrac{21}{8}\times\dfrac17\\\\=\dfrac38\text{ inches}$

Width of each pencil $=\dfrac38\text{ inches}$

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2 years ago

Read 2 more answers

The average person's

OLga [1]

Answer:

Step-by-step explanation:

The answer would be 20 due to the fact that it would have to be 50 divided by 2.5 to get the answer of how many steps and 50 divided by 2.5 would equal 20

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3 years ago

Need help plz help

torisob [31]

Answer:

A. Square for Ape.x

Step-by-step explanation:

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2 years ago

What are the Multiples of 24

Mademuasel [1]

You just have to take your multiplication table and then you can find what multiplication make 24
6x4=24
2x12=24
3x8=24

So 2 3 4 6 8 12 are all the multiples of 24

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3 years ago

What is the radius of a circle with a circumference of 15 cm​

What is the radius of a circle with a circumference of 15 cm