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3 years ago

15

A square field has an area 121 square meters.What is the perimeter of the field?

2 answers:

belka [17]3 years ago

5 0

Are is equal to the length times width so what times what would give you 121 and that's how you get the answer to that problem or any area perimeter problem

irinina [24]3 years ago

3 0

Keep in mind: area of a square = (side length)^2
perimeter of a square = 4(side length)

Use the first formula to determine the side length (find the sq. rt. of 121 m^2).
Then use the second formula to find the perimeter (in meters).

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Svetach [21]

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3 years ago

Candy and Hershel folded the same-size square papers.

kirza4 [7]

Answer:

The fractions are equivalent.

Step-by-step explanation:

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2 years ago

8) How many packs of DVD's can you buy with 77 dollars<br> if one pack costs 11 dollars ?

Vladimir79 [104]

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2 years ago

Last year, Mark was 46 inches tall. This year, Mark’s height is 3 inches less than Peter’s height. Peter is 51 inches tall. How

Karolina [17]

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4 0

2 years ago

Suppose you have a bag containing 2 black marbles and 3 red marbles. You reach into the bag, select a marble, see what color it

TiliK225 [7]

Answer:

$\dfrac{9}{25}$

Step-by-step explanation:

Given that the bag contains black and red marbles.

Number of black marbles in the bag = 2

Number of red marbles in the bag = 3

Total number of marbles in the bag = Number of black marbles + Number of red marbles = 2 + 3 = 5

Let us have a look at the formula for probability of an event E, which can be observed as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

$P(\text{First red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5 }$

Now, the marble chosen at first is replaced.

Therefore, the count remains the same.

$P(\text{Second red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5}$

Now, the <em>required probability</em> can be found as:

$P(\text{First red marble})\times P(\text{Second red marble}) = \dfrac{3}{5}\times \dfrac{3}{5} = \bold{\dfrac{9}{25} }$

3 0

2 years ago