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shusha [124]
2 years ago
7

Find the circumference of the circle and show work

Mathematics
2 answers:
Temka [501]2 years ago
7 0

Answer:

2.39

Step-by-step explanation:

Using the formula

C=2πr

Solving forr

r=C

2π=15

2·π≈2.38732

Sergeeva-Olga [200]2 years ago
3 0

Answer:

\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}

<u>Circumference</u><u> </u><u>of </u><u>circle </u><u>is </u><u>given </u><u>by </u><u>the </u><u>formula </u><u>,</u>

C = 2\pi \: r

  • Given - <u>radius </u><u>of </u><u>the </u><u>circle </u><u>is </u><u>1</u><u>5</u><u> </u><u>inches</u>

so we can easily find out the circumference ~

C = 2 \times  \frac{22}{7}  \times 15 \\  \\ \implies \: C =  \frac{660}{7}  \\  \\ \implies \: C = 94.29 \: inches

hope helpful :D

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11. m ∠ BCE = 25 °

m ∠BAD = 39°

12. n = 11. 5°

13. The quadrilaterals are rectangle and parallelogram. Option A and C

14. HK = 8cm

<h3>How to determine the angles</h3>

11. From the figure shown, we have that;

m ∠ EBC = 27°

m ∠ ADE = 52°

To find

m ∠ BCE

Note that m ∠ ADE is alternate and equal to m∠ DEC = 52 and is also on a straight line with ∠BEC

52 +  ∠BEC = 180°

∠BEC = 180 - 52° = 128°

Remember that  ∠BEC,  ∠ BCE  and ∠ EBC are angles in a triangle which sum up to 180°

128° +  ∠ BCE + 27° = 180°

∠ BCE = 180 ° - 155°

∠ BCE = 25 °

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65° +  76 + m ∠BAD = 180° , sum of angles in a a triangle

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m ∠BAD = 39°

12. Value of n is gotten by equating the two lengths

( 10n + 19) = (12n - 4)

collect like terms

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n = 11. 5°

13. The only quadrilaterals with congruent diagonals are;

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  • parallelogram

14.  To find line HK

Substract the shortest line, IJ from the longest line GL

HK = GL - IJ

HK = 15 - 7

HK = 8cm

Learn more about geometry here:

brainly.com/question/24375372

#SPJ1

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