3 years ago

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Mathematics

1 answer:

Setler79 [48]3 years ago

7 0

Answer:

..... surface area = 16 km^2.

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If the butcher paper is 21 inches long,what is the area of one circle

sergejj [24]

Answer:

= $12.25$ $\pi$

Step-by-step explanation:

Given:

Length of butcher paper,(diameter of three congruent circle) = 21 inches

Means, diameter of a circle = $\frac{21}{3}$ = 7 inches

Questioned asked:

Area of one circle = ?

Solution:

Radius of a circle ,r = half of of one circle's diameter

r = $\frac{7}{2}$

= $3.5$

Area of circle = $\pi$ $r^{2}$

$3.5\times3.5$ $\pi$

= $12.25$ $\pi$

Therefore, Area of one circle == $12.25$ $\pi$

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SOVA2 [1]

I think the answer is 2

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3 years ago

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Write the time 1:49 in two ways

jekas [21]

Answer:

1 hour and 45 mins or 1 hour, 40 mins, and 5 seconds

Step-by-step explanation:

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Julie hung up 3 bird feeders in her yard each birdfeeder,has 12 perches how many perches are there altogether

Sedaia [141]

36 perches altogether.

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A jar consists of blue, red and green marbles. The probability of each of them is 2/7 , 3/k and 5/2k. Find the value of k.

jok3333 [9.3K]

Answer:

k = 77/10

Step-by-step explanation:

The jar consist of blue, red and green marbles . The probability of each of them can be described as follows.

probability of blue marbles = 2/7

probability of red marbles = 3/k

probability of green marbles = 5/2k

The sum of the individual probability is equals to 1. Therefore,

2/7 + 3/k + 5/2k = 1

collect like terms

(6 + 5)/2k = 1 - 2/7

11/2k =(7 - 2) /7

11/2k = 5/7

cross multiply

10k = 77

divide both sides by 10

k = 77/10

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3 years ago