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2 years ago

What angle does an arc 6.6cm in length subtends at the centre of a circle of radius 14cm. Use π = 22/7)

Mathematics

2 answers:

vivado [14]2 years ago

6 0

Answer:

27°

Step-by-step explanation:

arc length = circumference × fraction of circle

let x be the central angle, then

2πr × $\frac{x}{360}$ = 6.6

2 × $\frac{22}{7}$ × 14 × $\frac{x}{360}$ = 6.6

88 × $\frac{x}{360}$ = 6.6 ( multiply both sides by 360 )

88x = 2376 ( divide both sides by 88 )

x = 27

Thus central angle is 27°

aniked [119]2 years ago

4 0

Answer:

STEP 1: Find the circumference:

Circumference = 2πr

Circumference = 2π(14) = 28π cm

............................................................................................

STEP 2: Find the length of the arc:

Length of the arc = 36/360 x 28π

Length of the arc = 8.8 cm

.............................................................................................

Answer: The length of the arc is 8.8 cm

............................................................................................

hope it helpssss

Mark it as brilliant answer plzzz

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Answer:

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Step-by-step explanation:

Given

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Required

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2 years ago

Use the normal approximation to the binomial distribution to answer this question. Fifteen percent of all students at a large un

Nataly_w [17]

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Step-by-step explanation:

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For x=4

$z=\dfrac{4-1.8}{1.2369}\approx1.78$

For x=3

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Then , from (1)

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Answer:

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Step-by-step explanation:

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Answer:

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5. GJ (George gets first prize, Jim gets second prize)

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Answer:

Step-by-step explanation:

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2 years ago

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