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elena55 [62]
3 years ago
8

How do you find the arc length of a semi-circle?

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
4 0

the arc length is calculated by the formula                                                                    \displaystyle\bf C=\frac{2\pi r}{360} \cdot\alpha   then   \displaystyle\bf C=\frac{2\cdot 8 \pi }{360} \cdot180=8\pi=3,14\cdot8=25.12   or it can be calculated using the circumference of the circle since we have a semicircle the circumference 2πr must be divided by 2  С=2πr:2=πr =8π=<u>25,12</u>

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Find the area of the regular polygon shown. Round your answer to the nearest tenth if necessary.
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Answer:

The answer is either B or D.

Step-by-step explanation:

5 0
3 years ago
Dwayne's garden is triangle-shaped with two equal sides and a third side that is 4 ft more than the length of an equal side. The
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D because its a triangle so it would be 3x but then you have to add the 4 for the longer side.

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Johnny invested $1000 in savings account that yields 2% interest annually. How much will Johnny's investment be worth in 10 year
Ann [662]
Calculate the interest in a year
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4 0
3 years ago
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8 0
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Answer:

Step-by-step explanation:

            Statements                                                       Reasons

1). Points A, B and C form the triangle           1). Given

2). Let DE be a line passing through             2). Definition of parallel lines

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4). m∠1 = m∠4 and m∠3 = m∠5                      4). Definition of alternate angles

5). m∠4 + m∠2+ m∠5 = 180°                           5). Angle addition and definition

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6). m∠1 + m∠2+ m∠3 = 180°                            6). Substitution

3 0
3 years ago
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