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2 years ago

Find the circumference. use 3.14 for π r=2 cm c=? c=π d help please

Mathematics

1 answer:

Helga [31]2 years ago

5 0

Answer:

C = 12.56m

Step-by-step explanation:

circumference is the distance around the outside of a circle. The r stands for radius, half way across, from the center(thats the little line on the diagram) "d" stands for diameter. That would be double the radius, bc its all the way across the circle through the center. The formula to find the CIRCUMFERENCE is given, C=pi × d

They told you to use 3.14 for pi. And also the radius is 2, so the diameter is 4

C = pi × d

C = 3.14 × 4

C = 12.56 meters

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There are 17 girls and 13 boys in a school club. What is the percent of the members are girls?

tresset_1 [31]

Answer:

131%

Step-by-step explanation:

17:13

17 ÷ 13 = 1.3076923076923 = 130.76923076923%

6 0

3 years ago

3/7 of which is 2 1/14

mash [69]

Answer:

4 and 5/6; 29/6.

Step-by-step explanation:

3/7 of x is 2-1/14.

(3/7)x = 29/14

x = (29/14) * (7/3)

x = (29/2) * (1/3)

x = 29/6

3/7 of 4 and 5/6 is 2 1/14.

Hope this helps!

3 0

3 years ago

Read 2 more answers

Somebody please help me !!!!

Stells [14]

Answer:

First use this formula= V=4/3πr^3

r=radius

Step-by-step explanation:

answer: 2144.66 I think. I might be wrong. Please let me know if I'm wrong.

7 0

2 years ago

HELP PLEASE!!

cestrela7 [59]

Answer:

Quadrilateral FSHB∼quadrilateral KTWJ.

Step-by-step explanation:

Given two quadrilaterals we have to prove these two similar.

The two quadrilaterals are similar if the corresponding sides of these are proportional then only the quadrilateral are proportional i.e

∴ $\frac{FS}{KT}=\frac{SH}{TW}=\frac{HB}{WJ}=\frac{BF}{JK}$

If the above condition satisfied then the quadrilateral are similar.

Let us find these ratios

$\frac{FS}{KT}=\frac{28}{21}=1.333$

$\frac{SH}{TW}=\frac{24}{18}=1.333$

$\frac{HB}{WJ}=\frac{18}{13.5}1.333$

$\frac{BF}{JK}=\frac{18}{13.5}1.333$

All ratios are equal.

Hence, the corresponding sides and angles of these two quadrilaterals are proportional implies that these two are similar i.e quadrilateral FSHB∼quadrilateral KTWJ.

7 0

3 years ago

Read 2 more answers

For a circle of raduis 6feet, find the arc length of a central angle of 6

murzikaleks [220]

Length of a circumference=2πr
r=radius=6 feet.
lengt of this circumference=2π6 feet=12π feet.

1 circumference=360º; then:

360º-------------------12π feet
6º---------------------- x

360º * x=6º * 12π feet
x=(6º * 12π feet) / 360º=π/30 feet (≈0,105 feet).

Solution: π/30 feet

4 0

3 years ago