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Sidana [21]
4 years ago
14

Calculate the perimeter of a semi-circlewhose diameter is 14cm​

Mathematics
2 answers:
garri49 [273]4 years ago
8 0

perimeter of a semicircle is \frac{2\pi r}{2}+2r=\frac{d\pi}2 +d

$d=14$

so, perimeter= $14\cdot\frac{22}7\cdot \frac{1}2+14=22+14=36$ cm

Trava [24]4 years ago
7 0

Answer:

Perimeter of semi-circle = 36 cm

Step-by-step explanation:

diameter = d = 14 cm

Perimeter of semicircle = Circumference of semi-circle + diameter

                                       = \frac{1}{2}\pi d + d

                                       = \frac{1}{2}*\frac{22}{7}*14 +14\\

                                       = 22 + 14

                                       = 36 cm

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Answer:

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Step-by-step explanation:

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7 0
3 years ago
A standard American Eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. Assuming the weights of sta
lions [1.4K]

Answer:

Approximately 24–36 pounds

Step-by-step explanation:

Given:

Weight of standard American Eskimo dog has mean= 30 pounds

A standard deviation= 2 pounds

For 99.7% of the dogs according to normal distribution would lie between 3 standard deviations on either side of the mean.

i.e. lower bound= Mean- 3 (standard deviation)

= 30-3(2)

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Upper bound = Mean +3 (standard deviation)

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Hence the range of weights : 24-36 pounds

correct answer Approximately 24–36 pounds!

4 0
4 years ago
Jackson is two times older than Shelly. If the sum of their ages is 18, how old is Jackson?
salantis [7]
Answer: jackson is 12

explanation:
let the age be represented by x
jackson is 2 times older than shelly so
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since the sum of their ages is 18 then:
2x + x = 18

solve:
3x = 18 ➔ divide by 3 on both sides
x = 6

so now we know shelly is 6

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3 years ago
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